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Chapter: 6 -Problem: 23 >> For the pendulum in question 22 when the pendulum bob is halfway between the high point and the low point in its swing is the total energy kinetic energy, potential energy, on both? Explain.
Answer Preview: Principle of conservation of energy If there are no nonconservative forces doing work on a system th…

, Chapter: 14 -Problem: 7 >> A straight segment of wire has a length of 10 cm and carries a current of 5 A. It is oriented at right angles to a magnetic field of 0.6 T. What is the magnitude of the magnetic force on this segment of wire?
Answer Preview: The fore exerted is F IlB Here I is current l is the length …

, Chapter: 8 -Problem: 21 >> Is it possible for two objects with the same mass to have different rotational inertias? Explain.
Answer Preview: Yes it is possible for two objects with the same mass to have different r…

, Chapter: 7 -Problem: 6 >> If a ball bounces off a wall so that its velocity coming back has the same magnitude that it had prior to bouncing: a. Is there a change in the momentum of the ball? Explain. b. Is there an impulse acting on the ball during its collision with the wall? Explain
Answer Preview: a Yes there is a change in momentum of the ball Mo…

, Chapter: 14 -Problem: 6 >> If we regard the Earth as magnet, does its magnetic north pole coincide with its geographic north pole? What defines the position of the geographic north pole? Explain.
Answer Preview: Since unlike poles attract the south pole of the Earths magnet m…

, Chapter: 8 -Problem: 4 >> The rate of rotation of an object is gradually slowing down. Does this object have a rotational acceleration? Explain.
Answer Preview: The rotational acceleration of an object is defined as the rate …

, Chapter: 6 -Problem: 25 >> A sports car accelerates rapidly from a stop and “burns rubber.’’ a. What energy transformations occur in this situation? b. Is energy conserved in this process? Explain.
Answer Preview: a Here first the potential chemical energy of fuel is converted into thermal energy of fue…

, Chapter: 14 -Problem: 2 >> If the distance between the south poles of two long bar magnets is reduced to half its original value, will the force between these poles be doubled? Explain.
Answer Preview: NO The magnetic force betweeen two poles depends inversly on the square of …

, Chapter: 9 -Problem: 4 >> A penny and a quarter are embedded in the concrete bottom of a swimming pool filled with water. Which of these coins experiences the greater downward force due to water pressure acting on it? Explain.
Answer Preview: The average pressure is the ratio of the perpendicular force to the area ov…

, Chapter: 1 -Problem: 7 >> Suppose that a friend states the hypothesis that the color of socks that he wears on a given day, brown or black, will determine whether the stock market will go up or down. He can cite several instances in which this hypothesis has been apparently verified. How would you go about evaluating this hypothesis?
Answer Preview: Scientific method This involves the following steps 1 Careful observation of natural phenomena …

, Chapter: 14 -Problem: 14 >> Why does the magnetic force on a current-carrying segment of wire behave like one on a positive charge traveling in the same direction as the current? Explain.
Answer Preview: Magnetic force on positive moving charge q The usual way to find the magnetic force is framed in ter…

, Chapter: 8 -Problem: 2 >> Which units would not be appropriate for describing a rotational acceleration: rad/s, rev/s2, rev/m2 , degrees/s2 ? Explain.
Answer Preview: Rotational acceleration is the rate of change in rotational velocit…

, Chapter: 7 -Problem: 8 >> A ball traveling with an initial momentum of 2.5 kg·m/s bounces off a wall and comes back in the opposite direction with a momentum of - 2.5 kg·m/s. a. What is the change in momentum of the ball? b. What impulse would be required to produce this change?
Answer Preview: Initial momentum of the ball p 1 25 k…

, Chapter: 11 -Problem: 12 >> Does a gasoline-burning automobile engine operate in a reversible manner? Explain.
Answer Preview: No not all the heat obtained from the burning fuel is converted to work done Some of th…

, Chapter: 13 -Problem: 15 >> A 60-W light bulb operates on an effective ac voltage of 110 V. a. What is the effective current through the light bulb? b. From Ohm’s law, what is the resistance of the light bulb?
Answer Preview: a Express the relation for power on the light bulb P I 2 R He…

, Chapter: 9 -Problem: 11 >> A block of wood of uniform density floats so that exactly half of its volume is underwater. The density of water is 1000 kg/m3. What is the density of the block?
Answer Preview: Express the relationship between the volume of water and the den…

, Chapter: 6 -Problem: 5 >> A force of 50 N is used to drag a crate 4 m across a floor. The force is directed at an angle upward from the crate so that the vertical component of the force is 30 N and the horizontal component is 40 N as shown in the diagram. a. What is the work done by the horizontal component of the force? b. What is the work done by the vertical component of the force? c. What is the total work done by the
Answer Preview: a Express the relation between horizontal component of work done and force on the crate W x F x …

, Chapter: 9 -Problem: 5 >> A pipe with a circular cross section has a diameter of 8 cm. It narrows at one point to a diameter of 5 cm. The pipe is carrying a steady stream of water that completely fills the pipe and is moving with a speed of 1.5 m/s in the wider portion. a. What are the cross-sectional areas of the wide and narrow portions of the pipe?  (A = ?r3 and the radius is half the diameter.) b. What is the speed of
Answer Preview: Given Diameter of the wide portion of the pipe d 1 8 cm Diameter of the nar…

, Chapter: 13 -Problem: 11 >> Three resistors of 3 ?, 6 ?, and 2 ? are connected in parallel with one another. What is the equivalent resistance of this combination?
Answer Preview: The following diagram shows the circuit the circuit diagram of parallel combination of …

, Chapter: 7 -Problem: 21 >> When a cannon rigidly mounted on a large boat is fired, is momentum conserved? Explain, being careful to clearly define the system being considered.
Answer Preview: Yes the total momentum of the boa…

, Chapter: 8 -Problem: 17 >> A uniform metal wire is bent into the shape of an L. Will the center of gravity for the wire lie on the wire itself? Explain.
Answer Preview: Answer is No For this first we have to understand center of gravity It is the aver…

, Chapter: 7 -Problem: 7 >> A 60-kg front-seat passenger in a car moving initially with a speed of 18 m/s (40 MPH) is brought to rest by an airbag in a time of 0.4 s. a. What is the impulse acting on the passenger? b. What is the average force acting on the passenger in this process?
Answer Preview: a Initial momentum of a passenger of mass m moving with speed v is p mv Substitute 6…

, Chapter: 10 -Problem: 6 >> Is it possible for a temperature to be lower than 0 K on the Kelvin temperature scale? Explain.
Answer Preview: If we plot the pressure of a gas as a function of temperature measured on the Celsius scale we …

, Chapter: 6 -Problem: 1 >> You can construct a simple pendulum easily by attaching a ball to a string (with tape or a staple) and fixing the other end of the string to a rigid support. (A pencil taped firmly to the end of a desk or table will do nicely.) a. The frequency of oscillation can be measured by timing the swings. The usual method is to use a watch to measure the time required for ten or more complete swings. The p
Answer Preview: Consider a simple pendulum of length l and mass of the bob as m. let the bob be suspended from the p…

, Chapter: 14 -Problem: 11 >> A uniform magnetic field is directed horizontally toward the north, and a positive charge is moving west through this field. Is there a magnetic force on this charge, and if so, in what direction? Explain.
Answer Preview: When a charged particle is moving perpendicular to the field then it experiences a magnetic force The expression for magnetic force acts on charge particle in uniform magnetic field is F qvB Where q is the charge v is the velocity and q is magnetic field strength The direction of the magnetic force is described by the right hand rule If we point the index finger of right hand in the direction of the velocity of the positive charge and the middle finger in the direction of the magnetic field the …

, Chapter: 7 -Problem: 18 >> A fullback collides midair and head-on with a lighter defensive back. If the two players move together following the collision, is it possible that the fullback will be carried backward? Explain.
Answer Preview: Yes it is possible that the fullback will be carried back The direction of bot…

, Chapter: 8 -Problem: 16 >> A solid plank with a uniform distribution of mass along its length rests on a platform with one end of the plank protruding over the edge. How far out can we push the plank before it tips? Explain. Distribution The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security t
Answer Preview: We can push the plank toils point where the center of gravity is located In this case …

, Chapter: 7 -Problem: 10 >> A fullback with a mass of 100 kg and a velocity of 3.5 m/s due west collides head-on with a defensive back with a mass of 80 kg and a velocity of 6 m/s due east. a. What is the initial momentum of each player? b. What is the total momentum of the system before the collision? c. If they stick together and external forces can be ignored, what direction will they be traveling immediately after they c
Answer Preview: Sign convention for direction of velocity East Positive West Negative Mass of fullb…

, Chapter: 10 -Problem: 13 >> What happens if we add heat to water that is at the temperature of 100°C? Does the temperature change? Explain.
Answer Preview: No Usually adding heat to water increases its temperature But this is not the case when heat is adde…

, Chapter: 5 -Problem: 4 >> Consult your instructor or other sources to find out what planets are observable in the evening during the current month. Venus, Jupiter, or Mars are usually the best candidates. a. Locate the planet visually and observe it with binoculars if possible. How does the planet differ in appearance from that of nearby stars? b. Sketch the position of the planet relative to nearby stars for several night
Answer Preview: To observe the planets, you can use a sky map or planetarium app to find out when and where they wil…

, Chapter: 13 -Problem: 14 >> A 30-? resistor has a voltage difference of 3 V across its leads. a. What is the current through the resistor? b. What is the power being dissipated in this resistor?
Answer Preview: a Current passing through the resistor is given as follows Substitute 3V for V and …

, Chapter: 20 -Problem: 5 >> If a boat is moving across a stream, will the speed of the boat relative to the bank equal the numerical sum of speed of the boat relative to the water and the speed of the water relative to the bank? Explain.
Answer Preview: Speed is a scalar quantity It is modulus of velocity relative speed is given by modulus of relative …

, Chapter: 9 -Problem: 12 >> If you filled an airtight balloon at the top of a mountain, would the balloon expand or contract as you descend the mountain? Explain.
Answer Preview: If you are descending from the top of a mountain with an airtight b…

, Chapter: 6 -Problem: 4 >> A rope applies a horizontal force of 180 N to pull a crate a distance of 2 m across the floor. A frictional force of 60 N opposes this motion. a. What is the work done by the force applied by the rope? b. What is the work done by the frictional force? c. What is the total work done on the crate?
Answer Preview: a Work done by the applied force F can be expressed in terms of displaceme…

, Chapter: 10 -Problem: 16 >> Work of 1500 J is done on an ideal gas, but the internal energy increases by only 800 J. What is the amount and direction of heat flow into or out of the system?
Answer Preview: According to the first law of thermodynamics the chang…

, Chapter: 17 -Problem: 1 >> Fill a clear glass almost to the top with water and insert various objects into the water. a. Do the objects appear to be shorter than their actual length when viewed from above the glass? b. Do the objects appear to be shorter than their actual length when viewed through the sides of the glass? What distortions do you notice when viewing the objects through the sides?
Answer Preview: If we fill a glass almost to the top with water and insert various objects into the water, than a…

, Chapter: 14 -Problem: 5 >> A wire carries a current of 4 A. How much charge flows past a point on the wire in a time of 5 s?
Answer Preview: Express the relationship between current and charge I q…

, Chapter: 18 -Problem: 7 >> Suppose that an X-ray beam has a wavelength of 5.0 x 10-9 m. What is the frequency of these X rays? (v = c = f ?)
Answer Preview: Wave length of Xray beam is 50x10 9 m The relation betw…

, Chapter: 8 -Problem: 19 >> A tall crate has a higher center of gravity than a shorter crate. Which will have the greater tendency to tip over if we push near the top of the crate? Explain with a force diagram. Where is the probable axis of rotation?
Answer Preview: A tall crate has a higher center of gravity than a shorter crat…

, Chapter: 7 -Problem: 1 >> A fast ball thrown with a velocity of 40 m/s (approximately 90 MPH) is struck by a baseball bat, and a line drive comes back toward the pitcher with a velocity of 60 m/s. The ball is in contact with the bat for a time of just 0.04 s. The baseball has a mass of 120 g (0.120 kg). a. What is the change in momentum of the baseball during this process? b. Is the change in momentum greater than the fina
Answer Preview: a Write the expression for change in moment of fast ball when it collides with baseball bat p mv f m…

, Chapter: 10 -Problem: 21 >> An ideal gas is compressed without allowing any heat to flow into or out of the gas. Will the temperature of the gas increase, decrease, or remain the same in this process? Explain.
Answer Preview: Given that the ideal gas is compressed work is done on the system hence from sign convention …

, Chapter: 20 -Problem: 11 >> A spaceship is traveling with a velocity of 0.8c relative to the Earth. What is the momentum of the spaceship if its mass is 5000 kg? (p  = ?mv and c = 3 x 108 m/s. See table 20.1.) Transcribed Image Text: table 20.1 Values of y for Different Values of Relative Speed v v = 0.010 y = 1.000 05 V V = 0
Answer Preview: Given The velocity of the space shift is = v = 0 8c Here, the velocity of light i…

, Chapter: 13 -Problem: 12 >> Three identical resistances, each 24 ?, are connected in parallel with one another as shown. The combination is connected to a 12-V battery whose internal resistance is negligible. a. What is the equivalent resistance of this parallel combination? b. What is the total current through the combination? c. How much current flows through each resistor in the combination?
Answer Preview: The equivalent resistance of the parallel combination of resistors is the reciprocal of addition of …

, Chapter: 18 -Problem: 14 >> If the electron beam in a television tube is striking just one point on the screen at a time, how can we get a full picture? Explain.
Answer Preview: After leaving the electron gun the beam of electrons travels across the tube producin…

, Chapter: 8 -Problem: 18 >> An object is rotating with a constant rotational velocity. Can there be a net torque acting on the object? Explain.
Answer Preview: The torque is the tendency of an object to rotate about an axis when some force is …

, Chapter: 6 -Problem: 1 >> A horizontally directed force of 40 N is used to pull a box a distance of 2.5 m across a tabletop. How much work is done by the 40-N force?
Answer Preview: We have work done by a force F is w Fs coso Here F i…

, Chapter: 10 -Problem: 25 >> Heat is added to a hot-air balloon causing the air to expand. Will this increased volume of air cause the balloon to fall? Explain.
Answer Preview: If Neat is added to the air in hotair balloon the …

, Chapter: 3 -Problem: 2 >> Working with a partner, you can get an estimate of your reaction time by catching a falling meter stick. Have your partner hold the meter stick from a point near the top while you place the finger and thumb of your catching hand about an inch apart on either side of the 50 cm mark. Without giving any cues, your partner then drops the meter stick, and when you see it move, you react to catch it by
Answer Preview: A. Here we are tabulating the data for one of the experiment observed and displa…

, Chapter: 15 -Problem: 24 >> Suppose that we increase the temperature of the air through which a sound wave is traveling. a. What effect does this have on the speed of the sound wave? Explain. b. For a given frequency, what effect does increasing the temperature have on the wavelength of the sound wave? Explain.
Answer Preview: a Air molecules have higher average velocities at higher temperatures and collide more frequently …

, Chapter: 18 -Problem: 4 >> Is mass conserved in a chemical reaction? Explain.
Answer Preview: The law of conservation of mass or principle of mass conservation A Lavoisier 1756 states that matte…

, Chapter: 8 -Problem: 18 >> A student, sitting on a stool rotating at a rate of 20 RPM, holds masses in each hand. When his arms are extended, the total rotational inertia of the system is 4.5 kg·m2. He pulls his arms in close to his body, reducing the total rotational inertia to 1.5 kg·m2. If there are no external torques, what is the new rotational velocity of the system?
Answer Preview: When torque on the system is zero then the angular momentum …

, Chapter: 7 -Problem: 10 >> If an air bag inflates too rapidly and firmly during a collision, it can sometimes do more harm than good in low velocity collisions. Explain using impulse and momentum ideas.
Answer Preview: During the collision the momentum of the person reduces from some init…

, Chapter: 10 -Problem: 4 >> We sometimes attempt to determine whether another person has a fever by placing a hand on their forehead. Is this a reliable procedure? What assumptions do we make in this process?
Answer Preview: The internal body temperature of the people is approximately …

, Chapter: 19 -Problem: 1 >> The concept of half-life, and the associated exponential decay curve, can be made more vivid by using piles of pennies (or other stackable objects) to represent atoms. a. Collect as many pennies as you can find on dresser tops and from coin purses. Fifty to one hundred should suffice. b. Divide your pile into two equal stacks, placed side by side. The left pile represents the original number of at
Answer Preview: solution: a)Let the Total number of pennies collected,N=…

, Chapter: 14 -Problem: 16 >> If we were to represent the current loop of question 15 as a bar magnet or magnetic dipole, in what direction would the north pole be pointing? Explain.
Answer Preview: A simple right hand rule describes the direction of …

, Chapter: 18 -Problem: 3 >> When a substance is burned, are all of the products of that reaction solid substances that can be easily weighed? Explain.
Answer Preview: To answer this If a substance has been burnt the substance has undergone combustion Depending on wha…

, Chapter: 8 -Problem: 32 >> A pencil, balanced vertically on its eraser, falls to the right. a. What is the direction of its angular-momentum vector as it falls? b. Is its angular momentum conserved during the fall? Explain.
Answer Preview: a Initially pencil is balanced vertically on the eraser T…

, Chapter: 10 -Problem: 11 >> Two cities, one near a large lake and the other in the desert, both reach the same high temperature during the day. Which city, if either, would you expect to cool down more rapidly once the sun has set? Explain.
Answer Preview: The city located in the desert will definitely cool faster because the air and soil in desert h…

, Chapter: 20 -Problem: 26 >> If an elevator is accelerating downward, will your apparent weight (as measured by a bathroom scale) be greater than your weight measured when the elevator is not accelerating? Explain.
Answer Preview: The elevator is accelerating downward and if the frame of reference is chosen as the elev…

, Chapter: 14 -Problem: 3 >> In what respects is the force between two magnetic poles similar to the force between two charged particles? Explain.
Answer Preview: The similarity between the behavior of magnetic pol…

, Chapter: 20 -Problem: 13 >> Which of Einstein’s postulates deals most directly with the failure to detect motion of the Earth relative to the ether? Explain.
Answer Preview: It was the second postulate of Einsteins special theory of relativity that deal…

, Chapter: 8 -Problem: 2 >> A 4-m long plank with a weight of 80 N is placed on a dock with 1 m of its length extended over the water, as in the diagram. The plank is uniform in density so that the center of gravity of the plank is located at the center of the plank. A boy with a weight of 150 N is standing on the plank and moving out slowly from the edge of the dock. a. What is the torque exerted by the weight of the plank
Answer Preview: A long plank with a weight is placed on a dock with its length extended over water …

, Chapter: 11 -Problem: 2 >> A heat engine with an efficiency of 25% does 400 J of work in each cycle. How much heat must be supplied from the high-temperature source in each cycle?
Answer Preview: The efficiency q of a heat engine is the ratio of work done W to the heat Q H gained from …

, Chapter: 14 -Problem: 2 >> A small metal ball with a charge of 0.05 C and a mass of 25 g (0.025 kg) enters a region where there is a magnetic field of 0.5 T. The ball is traveling with a velocity of 200 m/s in a direction perpendicular to the magnetic field, as shown in the diagram. Centripetal acceleration is equal to v2/r, what is the radius of the curve the ball will move through under the influence of the magnetic force
Answer Preview: The relation between centripetal acceleration the velocity of an object an…

, Chapter: 18 -Problem: 2 >> If carbon (C), with an atomic weight of 12, combines with oxygen (O), with an atomic weight of 16, to form carbon dioxide (CO2), how many grams of carbon would react with 96 g of oxygen?
Answer Preview: Carbon combines with oxygen to form carbon dioxide and this react…

, Chapter: 8 -Problem: 34 >> Can a yo-yo be made to “sleep” if the string is tied tightly to the axle? Explain.
Answer Preview: The torque due to the tension in the string produces a rotational acceleration …

, Chapter: 11 -Problem: 20 >> Is it possible for a heat pump to operate as shown in the diagram? Explain, using the laws of thermodynamics.  Transcribed Image Text: TH Tc QH Qc Q20 Diagram
Answer Preview: No it is not possible for a heat pump to operate as shown in the figure From the defin…

, Chapter: 14 -Problem: 25 >> Two coils of wire are identical except that coil A has twice as many turns of wire as coil B. If a magnetic field increases with time at the same rate through both coils, which coil (if either) has the larger induced voltage? Explain.
Answer Preview: Induced voltage in coil B E t NBAt The number of turns in coil a …

, Chapter: 7 -Problem: 30 >> A ball bounces off a wall with a velocity whose magnitude is less than it was before hitting the wall. Is the collision elastic? Explain.
Answer Preview: The answer is No For the collision to be elastic two conditions halve to be sa…

, Chapter: 8 -Problem: 7 >> If an object has a constant rotational acceleration, is its rotational velocity also constant? Explain.
Answer Preview: Constant acceleration If the object is rotating with constant …

, Chapter: 10 -Problem: 11 >> If 200 cal of heat are added to a system, how much energy has been added in joules?
Answer Preview: Given 200 cal added to the system Req…

, Chapter: 15 -Problem: 19 >> Is the distance between the antinodes of a standing wave equal to the wavelength of the two waves that interfere to form the standing wave? Explain.
Answer Preview: Yes the distance between the antinodes of a standing wave equal to the wavelength of the two waves t…

, Chapter: 20 -Problem: 14 >> Is it possible that two different observers will not agree on the time taken for a light beam to bounce off a mirror and return to its source? Explain.
Answer Preview: Yes it is possible for two observers to record different times taken by the light to boun…

, Chapter: 10 -Problem: 7 >> How much heat must be removed from a 200-g block of copper to lower its temperature from 150°C to 30°C? The specific heat capacity of copper is 0.093 cal/g·C°.
Answer Preview: Write for T to rewrite the expression for heat and specific heat Q mcT …

, Chapter: 13 -Problem: 6 >> Three 20-? resistors are connected in series to a 6-V battery of negligible internal resistance. a. What is the current flowing through each resistor? b. What is the voltage difference across each resistor?
Answer Preview: a The battery has negligible internal resistance so the current flowing through t…

, Chapter: 20 -Problem: 1 >> If a boat is moving downstream, will the velocity of the boat relative to the water be greater than the velocity of the boat relative to the stream bank? Explain.
Answer Preview: Lets take velocity of streamx velocity of boaty Since boat is moving on water relative velocity …

, Chapter: 13 -Problem: 3 >> In a simple battery-and-bulb circuit, is the electric current that enters the bulb on the side nearer to the positive terminal of the battery larger than the current that leaves the bulb on the opposite side? Explain.
Answer Preview: No It is not possible as in a circuit current flowi…

, Chapter: 10 -Problem: 2 >> The temperature on a winter day is 14°F. What is the temperature in degrees Celsius?
Answer Preview: The relation between the Fahrenheit scale to Celsius scale is given by T c …

, Chapter: 14 -Problem: 20 >> In what respect is a simple ammeter designed to measure electric current like an electric motor? Explain.
Answer Preview: Simple ammeter works in a principle of permanent magnetic moving coil PMMC or we can say it …

, Chapter: 18 -Problem: 15 >> Following Roentgen’s discovery of X rays, Becquerel discovered a seemingly similar type of radiation given off by phosphorescent materials containing uranium or thorium. Was this new radiation the same as X rays? Explain.
Answer Preview: At first Becquere l thought that the rays he found from his experiments were similar to Xrays but fu…

, Chapter: 12 -Problem: 1 >> An electron has a charge of - 1.6 x 10-19 C. How many electrons would be needed to produce a net charge of  -4.8 x 10-6 C?
Answer Preview: Rearrange the equation q Ne for N N qe substitute 16x1019 C f…

, Chapter: 7 -Problem: 1 >> Does the length of time that a force acts on an object have any effect on the strength of the impulse produced? Explain.
Answer Preview: Yes the length of the time that a force act has an effect on …

, Chapter: 10 -Problem: 20 >> Based upon his experiments, Joule proposed that the water in a pool at the bottom of a waterfall should have a higher temperature than that at the top. Why might this be so? Explain.
Answer Preview: If we apply joules experiment to this case when the paddle wheel is at the bottom of …

, Chapter: 14 -Problem: 3 >> If the distance between the two wires in exercise 2 is tripled, how does the force per unit length change?
Answer Preview: Force per unit length of the wire Fl 2kI 1 I 2 r Given that C…

, Chapter: 7 -Problem: 27 >> A railroad car collides and couples with a second railroad car that is standing still. If external forces acting on the system are ignored, is the velocity of the system after the collision equal to, greater than, or less than that of the first car before the collision? Explain.
Answer Preview: The velocity of the system after the collision is less than that …

, Chapter: 13 -Problem: 2 >> A current of 2.5 A flows through a battery for 1 min. How much charge passes through the battery in that time?
Answer Preview: Given that Current through th…

, Chapter: 6 -Problem: 4 >> Suppose that a 200-g mass (0.20 kg) is oscillating at the end of a spring upon a horizontal surface that is essentially friction-free. The spring can be both stretched and compressed and has a spring constant of 240 N/m. It was originally stretched a distance of 12 cm (0.12 m) from its equilibrium (unstretched) position prior to release. a. What is its initial potential energy? b. What is the maxi
Answer Preview: Given that mass of the body m 02 kg Spring constant k 240 Nm St…

, Chapter: 11 -Problem: 13 >> Which would have the greater efficiency a Carnot engine operating between the temperatures of 400°C and 300°C, or one operating between the temperatures of 400 K and 300 K? Explain.
Answer Preview: A Carnot engine takes in heat from a reservoir at TH 400C 400C 273K 673K Heat release to the reserv…

, Chapter: 15 -Problem: 18 >> A standing wave is produced on a string fixed at both ends so that there is a node in the middle as well as at either end. Will the frequency of this wave be greater than, equal to, or less than the frequency of the fundamental frequency, which has nodes only at the ends? Explain.
Answer Preview: Frequency in fundamental mode 2 2 L 2L Foundmental fre…

, Chapter: 21 -Problem: 23 >> Are liquid crystals fluids or solids? Explain.
Answer Preview: Liquid crystals LCsare a state of matter which has properties between those of conventional liquids …

, Chapter: 11 -Problem: 3 >> A Carnot engine operating in reverse as a heat pump moves heat from a cold reservoir at 5°C to a warmer one at 25°C. a. What is the efficiency of a Carnot engine operating between these two temperatures? b. If the Carnot heat pump releases 200 J of heat into the higher-temperature reservoir in each cycle, how much work must be provided in each cycle? c. How much heat is removed from the 5°C reserv
Answer Preview: a Calculate the efficiency of Carnot engine operating between two temperature as follows e T H T C T …

, Chapter: 1 -Problem: 13 >> The distance that an object travels when it starts from rest and undergoes constant acceleration is one-half the acceleration multiplied by the square of the time. Invent your own symbols and express this statement in symbolic form.
Answer Preview: Give i acceleration is constant let a ii Initial velocity of object u 0 msec 1 let final veloc…

, Chapter: 9 -Problem: 16 >> An airplane wing with an average cross-sectional area 10 m2 experiences a lift force of 60 000 N. What is the difference in air pressure, on the average, between the bottom and top of the wing?
Answer Preview: Use the above formula to find the average pre…

, Chapter: 14 -Problem: 15 >> A step-down transformer is to be used to convert an ac voltage of 120 V to 6 V to power an electric train. If there are 300 turns in the primary coil, how many turns should there be in the secondary coil?
Answer Preview: Rearrange equation V 2 V 1 N 2 N 1 to solve N 2 N 2 V …

, Chapter: 7 -Problem: 23 >> Suppose that you are standing on a surface that is so slick that you can get no traction at all in order to begin moving across this surface. Fortunately, you are carrying a bag of oranges. Explain how you can get yourself moving.
Answer Preview: To move on the surface which has no traction we need to throw something in the oppo…

, Chapter: 9 -Problem: 25 >> Why does the stream of water flowing from a faucet often get more narrow as the water falls? Explain.
Answer Preview: The speed of stream of water flowing from a faucet increases because of gravity since it accelerates …

, Chapter: 13 -Problem: 26 >> In using a dc voltmeter, it is important to connect the positive terminal of the meter in the correct direction in the circuit relative to the positive terminal of the battery. Is this likely to be true for the use of an ac voltmeter? Explain.
Answer Preview: Yes in most of the cases we need to connect the DC meter according to polarity However t…

, Chapter: 6 -Problem: 3 >> A slingshot consists of a rubber strap attached to a Y-shaped frame, with a small pouch at the center of the strap to hold a small rock or other projectiles. The rubber strap behaves much like a spring. Suppose that for a particular slingshot a spring constant of 600 N/m is measured for the rubber strap. The strap is pulled back approximately 40 cm (0.4 m) prior to being released. a. What is the p
Answer Preview: a Express the relation for a potential energy and spring constant of a slingshot U 12kx 2 Here U is …

, Chapter: 11 -Problem: 5 >> From the perspective of the first law of thermodynamics, is it possible for a heat engine to have an efficiency greater than 1? Explain.
Answer Preview: No Efficiency of heat engine cant be greater than 1 Because first law o…

, Chapter: 13 -Problem: 2 >> Three 30-? light bulbs are connected in parallel to a 1.5-V battery with negligible internal resistance. a. What is the current flowing through the battery? b. What is the current flowing through each bulb? c. If one bulb burns out, does the brightness of the other two bulbs change? Explain.
Answer Preview: The resistors with same resistance are connected in parallel combination The effec…

, Chapter: 8 -Problem: 14 >> A torque of 60 N·m producing a counterclockwise rotation is applied to a wheel about its axle. A frictional torque of 10 N·m acts at the axle. a. What is the net torque about the axle of the wheel? b. If the wheel is observed to accelerate at the rate of 2 rad/s2 under the influence of these torques, what is the rotational inertia of the wheel?
Answer Preview: a Net torque acting on wheel is applied friction Substitute 60 Nm for applie…

, Chapter: 11 -Problem: 7 >> A Carnot engine takes in heat from a reservoir at 400°C and releases heat to a lower-temperature reservoir at 150°C. What is its efficiency?
Answer Preview: Express the relation for the efficiency of Carnot engine Here e is the efficienc…

, Chapter: 6 -Problem: 2 >> As described in example box 6.2, a 100-kg crate is accelerated by a net force of 50 N applied for 4 s. a. What is the acceleration of the crate from Newton’s second law? b. If it starts from rest, how far does it travel in the time of 4 s? c. How much work is done by the 50-N net force? d. What is the velocity of the crate at the end of 4 s? e. What is the kinetic energy of the crate at this time?
Answer Preview: Mass of the crate m 100kg Net force Fnet 50N Time o…

, Chapter: 11 -Problem: 14 >> If we want to increase the efficiency of a Carnot engine, would it be more effective to raise the temperature of the high-temperature reservoir by 50°C or lower the temperature of the low-temperature reservoir by 50°C? Explain.
Answer Preview: From second law of thermodynamics the efficiency of Carnot s engine is If we wer…

, Chapter: 15 -Problem: 3 >> A slowly moving engine bumps into a string of coupled railroad cars standing on a siding. A wave pulse is transmitted down the string of cars as each one bumps into the next one. Is this wave transverse or longitudinal? Explain.
Answer Preview: This wave is longitudinal Longitudinal waves are those waves which vibrate …

, Chapter: 9 -Problem: 32 >> From the perspective of a right-handed batter, does a rising fastball spin clockwise or counterclockwise? Explain.
Answer Preview: The ball would appear counterclockwise to the batter The reason is bec…

, Chapter: 1 -Problem: 10 >> Based upon the descriptions provided in table 1.2, which subfields of physics are involved in explaining why an ice cube melts? Which subfields are involved in explaining how an airplane flies? Explain. Transcribed Image Text: table 1.2 The Major Subfields of Physics Mechanics. The study of forces
Answer Preview: Major subfields of physics The major subfields of physics are mechanics electricity …

, Chapter: 11 -Problem: 27 >> In what ways is a nuclear power plant similar to a coalfired plant? Explain.
Answer Preview: Nuclear Power Plant is similar to coalfired plant in this way that both of these power pla…

, Chapter: 14 -Problem: 3 >> A rectangular coil of wire has dimensions of 3 cm by 6 cm and is wound with 60 turns of wire. It is turned between the pole faces of a horseshoe magnet that produces an approximately uniform field of 0.4 T, so that sometimes the plane of the coil is perpendicular to the field and sometimes it is parallel to the field. a. What is the area bounded by the rectangular coil? b. What is the maximum valu
Answer Preview: The area bounded by the rectangular coil is given by A lb Here I is the length and his the breadth a …

, Chapter: 8 -Problem: 13 >> A wheel with rotational inertia of 4.5 kgm2 accelerates at a rate of 3.0 rad/s2. What net torque is needed to produce this acceleration?
Answer Preview: Torque acting on a wheel and moment of …

, Chapter: 6 -Problem: 28 >> A bird grabs a clam, carries it in its beak to a considerable height, and then drops it on a rock below, breaking the clam shell. Describe the energy conversions that take place in this process.
Answer Preview: Case I Clam is carried by the bird to a height fro…

, Chapter: 10 -Problem: 9 >> Is it possible for the final temperature of the objects discussed in question 8 to be greater than the initial temperatures of both objects? Explain.Data from question 8How much heat must be added to 60 g of ice at 0°C to melt the ice completely?
Answer Preview: SOLUTION Not if no other effect is involved such as work bein…

, Chapter: 14 -Problem: 19 >> Since the magnetic fields of a coil of wire and a bar magnet are identical, are there loops of current inside natural magnetic materials like iron or cobalt? Explain.
Answer Preview: The substances like iron cobalt is magnetic nature These substances attract other …

, Chapter: 8 -Problem: 15 >> Two 0.2-kg masses are located at either end of a 1-m long, very light and rigid rod as in the diagram. What is the rotational inertia of this system about an axis through the center of the rod?  Transcribed Image Text: Axis 0.2 kg 0.2 kg
Answer Preview: Mass of each object is m 02 kg Length of the rod is L 1m Two masses are located at either end …

, Chapter: 6 -Problem: 21 >> Suppose that the physics instructor pictured in figure 6.15 gives the bowling ball a push as she releases it. Will the ball return to the same point or will her chin be in danger? Explain.
Answer Preview: If the instructor would have just released initial v…

, Chapter: 10 -Problem: 16 >> A hammer is used to pound a piece of soft metal into a new shape. If the metal is thermally insulated from its surroundings, will its temperature change due to the pounding? Explain.
Answer Preview: Yes temperature will increase in this case According to first …

, Chapter: 14 -Problem: 22 >> If Faraday wound enough turns of wire on the secondary coil of his iron ring, would he have found that a large steady-state current in the primary coil induced a current in the secondary coil? Explain.
Answer Preview: Faraday has stated that the voltage will be induced in the secondary wire o…

, Chapter: 20 -Problem: 3 >> If an airplane is flying in the same direction as the wind, will the velocity of the plane relative to the ground be greater than, less than, or equal to the velocity of the plane relative to the air? Explain.
Answer Preview: It is given that an airplane is flying in the same direction a…

, Chapter: 9 -Problem: 7 >> If the output piston in a hydraulic pump exerts a greater force than one applied to the input piston, is the pressure at the output piston also larger than at the input piston? Explain.
Answer Preview: Let force acting on the output piston is F o Force acting on …

, Chapter: 6 -Problem: 31 >> A spring gun is loaded with a rubber dart, the gun is cocked, and then fired at a target on the ceiling. Describe the energy transformations that take place in this process.
Answer Preview: Elastic potential energy is stored while cocking t…

, Chapter: 10 -Problem: 31 >> Is it possible for heat to flow across a vacuum? Explain
Answer Preview: yes the heat flow across vacuum is possible by means of heat transf…

, Chapter: 16 -Problem: 3 >> Find two flat glass plates (microscope slides will work nicely). Wipe the glass plates clean and place one on top of the other. View the plates in reflected light from the overhead lighting in your room. a. Describe the pattern of light and dark fringes that you see. Are there any colors associated with these fringes? b. Place a very thin object such as a human hair between the two plates near one
Answer Preview: A s mentioned in the given setup a) We can observe the color interference pattern with differe…

, Chapter: 14 -Problem: 31 >> By stepping up the voltage of an alternating-current source using a transformer, can we increase the amount of electrical energy drawn from the source? Explain.
Answer Preview: No it is impossible to increase the amount of electrical energy by stepping up voltage or current us…

, Chapter: 18 -Problem: 3 >> If 38 g of fluorine (F) react completely with 2 g of hydrogen (H) to form the compound hydrogen fluoride (HF), what is the atomic weight of fluorine?
Answer Preview: Mass of fluorine is m F 38g Mass of hydrogen is m H …

, Chapter: 9 -Problem: 23 >> If an object has a smaller density than water, will the object stay fully submerged, partly submerged, or rise completely out of the water when it is released underwater? Explain.
Answer Preview: Step1 write the useful dgh Density of object So Density of water S w Step2 Calcula…

, Chapter: 7 -Problem: 5 >> A 0.12-kg ball traveling with a speed of 40 m/s is brought to rest in a catcher’s mitt. What is the size of the impulse exerted by the mitt on the ball?
Answer Preview: Initial momentum of a ball of mass m moving with spe…

, Chapter: 11 -Problem: 32 >> An engineer proposes a power plant that will extract heat from warm surface water in the ocean, convert some of it to work, and release the remaining heat into cooler water at greater depths. Is this a perpetual-motion machine and, if so, what kind? Explain.
Answer Preview: Yes this is perpetual motion of first kind An engineer proposes a power plant that will …

, Chapter: 20 -Problem: 8 >> An observer on Earth notes that an astronaut on a spaceship puts in a 4-hour shift at the controls of the spaceship. How long is this shift as measured by the astronaut himself, if the spaceship is moving with a velocity of 0.8c relative to the Earth? (See table 20.1. Be careful which observer measures the proper time?) Tr
Answer Preview: The velocity of the space ship relative to the Earth is v = 0 8c The …

, Chapter: 14 -Problem: 27 >> If the magnetic field produced by the magnets in a generator is constant, does the magnetic flux through the generator coil change when it is turning? Explain.
Answer Preview: In generator coil of wire located between the poles of p…

, Chapter: 7 -Problem: 34 >> Two lumps of clay, of equal mass, are traveling through the air at right angles to each other with velocities of equal magnitude. They collide and stick together. Is it possible that their velocity vector after the collision is in the direction shown in the diagram? Explain.  Transcribed Image Text:
Answer Preview: It is given that both lumps of clay have same mass and they are moving with same magnitude of veloci…

, Chapter: 9 -Problem: 5 >> In a hydraulic system, a force of 400 N is exerted on a piston with an area of 0.001m2. The load-bearing piston in the system has an area of 0.2m2. a. What is the pressure in the hydraulic fluid? b. What is the magnitude of the force exerted on the loadbearing piston by the hydraulic fluid?
Answer Preview: The Hydraulic lift works based on the Pascals principle which states that the pressure applied to …

, Chapter: 6 -Problem: 2 >> A woman does 160 J of work to move a table 4 m across the floor. What is the magnitude of the force that the woman applied to the table if this force is applied in the horizontal direction?
Answer Preview: Here the woman doing some work by applying force to move the table to 4 in distance …

, Chapter: 10 -Problem: 1 >> Is an object that has a temperature of 0°C hotter than, colder than, or at the same temperature as one that has a temperature of 0°F? Explain.
Answer Preview: The formula for conversion of Fahrenheit to Celsius temperat…

, Chapter: 11 -Problem: 2 >> Find a local car dealer who sells hybrid automobiles. (Honda and Toyota are currently the best bets.) Collect literature describing the specifications for the hybrid vehicle as well as for other vehicles of similar size. (This information may also be obtained on the Internet.) a. Compare the gasoline engine size, horsepower, and estimated gas mileage for the hybrid vehicle and the standard vehicle
Answer Preview: A hybrid vehicle is a type of car that combines a gasoline engine with an electric motor to create a fuel-efficient and environmentally friendly vehic…

, Chapter: 13 -Problem: 8 >> In the circuit shown, the 1-? resistance is the internal resistance of the battery and can be considered to be in series, as shown, with the battery and the 9-? load. a. What is the current flowing through the 9-? resistor? b. What is the voltage difference across the 9-? resistor? Transcribed Image Text:
Answer Preview: The given circuit is a Internal resistance of the battery R b…

, Chapter: 20 -Problem: 12 >> Do either of Einstein’s postulates contradict the classical assumptions of how relative velocities add? Explain.
Answer Preview: Let me remind you the two postulates of special relativity All laws of physics are invariant in all inertial frame of reference Speed of light is inva…

, Chapter: 9 -Problem: 3 >> The same force is applied to two cylinders that contain air. One has a piston with a large area, and the other has a piston with a small area. In which cylinder will the pressure be greater? Explain
Answer Preview: Pressure is the ratio of force to the area over which it is applied P F…

, Chapter: 6 -Problem: 32 >> Suppose that a mass is hanging vertically at the end of a spring. The mass is pulled downward and released to set it into oscillation. Is the potential energy of the system increased or decreased when the mass is lowered? Explain.
Answer Preview: When a mass attached to a spring is stretched Then the …

, Chapter: 11 -Problem: 25 >> When a substance freezes, the molecules become more organized and the entropy decreases. Does this involve a violation of the entropy statement of the second law of thermodynamics? Explain.
Answer Preview: No this doesnt involve a violation of the entrop…

, Chapter: 8 -Problem: 5 >> As described in the study hint on page 160, use a bicycle wheel mounted on a hand-held axle (probably available from your friendly physics department) to study the angular momentum vectors and their changes. In particular, make these observations: a. Grasp the wheel with both hands by the handles on each side and have someone give it a good spin with the wheel in a vertical plane. Then try tilting
Answer Preview: a. If you tilt the wheel downward to the left while it is spinning in a vertical plane, the wheel wi…

, Chapter: 15 -Problem: 14 >> Is it possible for two waves traveling in the same direction to produce a wave (when they interfere) that has a smaller height (amplitude) than either of the individual waves? Explain.
Answer Preview: If the waves are completely in phase then the resulting amplitude or height is the a…

, Chapter: 20 -Problem: 10 >> What was the Michelson-Morley experiment designed to detect? Why did they expect that the speed of light might vary at different times of the year? Explain.
Answer Preview: MichelsonMorleys experiment was designed to test the aether hypothesis According to this hypothesis …

, Chapter: 9 -Problem: 6 >> The fluid in a hydraulic system pushes against two pistons, one with a large area and the other with a small area. a. Which piston experiences the greater force due to fluid pressure acting on it? Explain. b. When the smaller piston moves, does the larger piston move through the same distance, a greater distance, or a smaller distance than the smaller piston? Explain
Answer Preview: a The piston with larger area experience larger force b…

, Chapter: 6 -Problem: 13 >> If there is just one force acting on an object, does its work necessarily result in an increase in kinetic energy? Explain.
Answer Preview: No the work done by single force acting on an object need not necessarily result an in…

, Chapter: 10 -Problem: 18 >> Suppose that the internal energy of a system has been increased, resulting in an increase in the temperature of the system. Is it possible to tell from the final state of the system whether the change in internal energy was due to the addition of heat or of work to the system? Explain.
Answer Preview: If temperature of the system is increases the internal energy of the system is als…

, Chapter: 20 -Problem: 2 >> Suppose that a beam of ? mesons (or pions) is moving with a velocity of 0.9c with respect to the laboratory. When the pions are at rest, they decay with a half-life of 1.77 x 10-8 s. a. Calculate the factor ? for the velocity of the pions relative to the laboratory. b. What is the half-life of the moving pions as seen by an observer in the laboratory? c. How far do the pions travel, as measured in
Answer Preview: a. The expression for the relativistic factor is as follows Here, v is the velocity of the particle …

, Chapter: 14 -Problem: 12 >> A coil of wire with 60 turns and a cross-sectional area of 0.02 m2 lies with its plane perpendicular to a magnetic field of magnitude 1.5 T. The coil is rapidly removed from the magnetic field in a time of 0.2 s. a. What is the initial magnetic flux through the coil? b. What is the average value of the voltage induced in the coil?
Answer Preview: a The magnetic flux through a surface of a coil of N turns is cal…

, Chapter: 21 -Problem: 19 >> In making ever-smaller electronic instruments, do integrated circuits have an advantage over the use of separate transistors and diodes? Explain.
Answer Preview: Integrated Circuits or IC circuits have very clear advantages over using separate transistors or dio…

, Chapter: 8 -Problem: 8 >> A force of 50 N is applied at the end of a wrench handle that is 24 cm long. The force is applied in a direction perpendicular to the handle as in the diagram. a. What is the torque applied to the nut by the wrench? b. What would the torque be if the force were applied half way up the handle instead of at the end?  Transcr
Answer Preview: a Express the relationship between torque and force F…

, Chapter: 6 -Problem: 26 >> A man commutes to work in a large sport utility vehicle (SUV). a. What energy transformations occur in this situation? b. Is mechanical energy conserved in this situation? Explain. c. Is energy of all forms conserved in this situation? Explain.
Answer Preview: a The potential energy stored in the fuel changes to kinetic energy and then some of the energy i…

, Chapter: 10 -Problem: 5 >> The temperature of a beaker of water is 318.2 K. What is this temperature  a. In degrees Celsius? b. In degrees Fahrenheit?
Answer Preview: a The temperature of beaker of water T K 3182K …

, Chapter: 6 -Problem: 13 >> A 0.20-kg mass attached to a spring is pulled back horizontally across a table so that the potential energy of the system is increased from zero to 120 J. Ignoring friction, what is the kinetic energy of the system after the mass is released and has moved to a point where the potential energy has decreased to 80 J?
Answer Preview: Consider system to be isolated Mass m=0 20kg Initial pot…

, Chapter: 14 -Problem: 30 >> Can a transformer be used, as shown in the diagram below, to step up the voltage of a battery? Explain.  Transcribed Image Text: Q30 Diagram
Answer Preview: In this transformer the number of turns in the secondary coil is more than a …

, Chapter: 18 -Problem: 30 >> The chemical properties of sodium (Na), with eleven electrons, are similar to those of lithium (Li), which has just three electrons. How do we explain this fact?
Answer Preview: The Chemical properties of an element depend only upon the number of valence electrons ie electrons …

, Chapter: 9 -Problem: 9 >> With the temperature held constant, the piston of a cylinder containing a gas is pulled out so that the volume increases from 0.1m3to 0.3m3. If the initial pressure of the gas was 80 kPa, what is the final pressure?
Answer Preview: Initial pressure of gas is P 1 80kPa Fina…

, Chapter: 10 -Problem: 28 >> Heat is sometimes lost from a house through cracks around windows and doors. What mechanism of heat transfer (conduction, convection, or radiation) is involved? Explain.
Answer Preview: Convection is the process due to which heat i…

, Chapter: 21 -Problem: 1 >> On a clear night (preferably away from city lights), go outside and study the night sky. a. Can you see the Milky Way? (It will usually appear as a faint cloud of stars making an irregular band across the sky.) Make a sketch of its orientation. b. What are the brightest objects in the sky (other than the moon)? Are some of these objects planets? Some planets will produce a steadier-appearing light
Answer Preview: a. Yes, the Milky Way can be seen as a faint cloud of stars making an irregular band a…

, Chapter: 14 -Problem: 16 >> A step-up transformer is designed to produce 1380 V from a 115-V ac source. If there are 400 turns on the secondary coil, how many turns should be wound on the primary coil?
Answer Preview: Expression for the step up transformer is V 2 V 1 N 2 N 1 Re…

, Chapter: 7 -Problem: 29 >> If momentum is conserved in a collision, does this indicate conclusively that the collision is elastic? Explain.
Answer Preview: Momentum conservation is not conclusive evidence that th…

, Chapter: 9 -Problem: 1 >> Is it possible for a 100-lb woman to exert a greater pressure on the ground than a 250-lb man? Explain.
Answer Preview: As we all know that Pressure is directly proportional to fo…

, Chapter: 11 -Problem: 3 >> In applying the first law of thermodynamics to a heat engine, why is the change in the internal energy of the engine assumed to be zero? Explain.
Answer Preview: The first law of thermodynamics places some funds on what a heat engine can do …

, Chapter: 20 -Problem: 1 >> A boat capable of moving with a velocity of 6 m/s relative to the water is pointed straight across a stream flowing with a current velocity of 3 m/s. The width of the stream is 48 m. a. Draw a vector diagram to show how the velocity of the stream adds to the velocity of the boat relative to the water to obtain the velocity of the boat relative to the Earth. b. Use the Pythagorean theorem to find t
Answer Preview: Given The velocity of the boat relative to the water is (v bw ) = 6m/s The velocity of the boat re…

, Chapter: 15 -Problem: 7 >> Is it possible to produce a transverse wave on a Slinky? Explain.
Answer Preview: Yes it is possible to produce transverse waves on slinky Th…

, Chapter: 21 -Problem: 18 >> What property of transistors makes them useful for amplifying an electrical signal? Explain.
Answer Preview: A transistor is also use to amplify electric signal tr…

, Chapter: 8 -Problem: 14 >> You are trying to move a large rock using a steel rod as a lever. Will it be more effective to place the fulcrum nearer to your hands or nearer to the rock? Explain.
Answer Preview: Close to rock The force required to move a large rock usi…

, Chapter: 11 -Problem: 29 >> Electric motors convert electric energy to mechanical work at a much higher efficiency than gasoline engines can convert heat to work. Why might it not make sense, then, to run all of our vehicles on electric power? Where does the electric power originate? Explain.
Answer Preview: The electric motor converts electrical energy to mechanical energy In the city driving con…

, Chapter: 3 -Problem: 3 >> Try dropping a ball from one hand at the same time that you throw a second ball with your other hand. At first, try to throw the second ball horizontally, with no upward or downward component to its initial velocity. (It may take some practice.) a. Do the balls reach the floor at the same time? (It helps to enlist a friend for making this judgment.) b. If the second ball is thrown slightly upward
Answer Preview: Speaking theoretically, S=ut+ 0 5 at 2 -----(a) every particle has three components of velocities if …

, Chapter: 15 -Problem: 28 >> Is it possible for sound waves to travel through a vacuum? Explain.
Answer Preview: No it is not possible for sound w

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11 Reviews for Physics of Everyday Phenomena A conceptual Introduction to physics Textbook Questions And Answers