Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 3, Problem 103E
To determine
The fastest among a ping- pong ball and a golf ball with same kinetic energy and the fastest among the heavier gaseous molecule and the lighter gaseous molecule with an average kinetic energy.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Chapter 3 Solutions
Conceptual Physical Science (6th Edition)
Ch. 3 - Which has greater momentum: an automobile at rest...Ch. 3 - When a ball is hit with a given force, why does...Ch. 3 - Why is it a good idea to extend your bare hand...Ch. 3 - Why is it poor judgment to have the back of your...Ch. 3 - Why is it advantageous, in karate, to apply a...Ch. 3 - Prob. 6RCQCh. 3 - If a ball has the same speed just before being...Ch. 3 - In which of cases (1), (2), and (3) in Question 7...Ch. 3 - What does it mean to say that momentum (or any...Ch. 3 - When a cannonball is fired, momentum is conserved...
Ch. 3 - Railroad car A rolls at a certain speed and makes...Ch. 3 - If the equally massive railroad cars of Question...Ch. 3 - When is energy most evident?Ch. 3 - Cite an example in which a force is exerted on an...Ch. 3 - Which requires more work: lifting a 50-kg sack a...Ch. 3 - A car is raised a certain distance in a service...Ch. 3 - Two cars are raised to the same elevation on...Ch. 3 - If a moving car speeds up until it is going three...Ch. 3 - What is the relationship between work and power?Ch. 3 - What is the relationship between the gain in...Ch. 3 - Compared with the work that the brakes must supply...Ch. 3 - What will be the kinetic energy of the ram of a...Ch. 3 - An apple hanging from a limb has potential energy...Ch. 3 - Can a machine multiply input force? Input...Ch. 3 - If a machine multiplies force by a factor of 4,...Ch. 3 - What is the efficiency of a machine that...Ch. 3 - What becomes of energy when efficiency is lowered...Ch. 3 - What is the ultimate source of the energy supplied...Ch. 3 - What is the ultimate source of geothermal energy?Ch. 3 - Can we correctly say that hydrogen is a relatively...Ch. 3 - Show that the momentum for a 2-kg brick...Ch. 3 - Show that the impulse on a baseball that is hit...Ch. 3 - Show that when a 10-kg cart undergoes a 2.0-m/s...Ch. 3 - Show that when an impulse produced by a 12-N force...Ch. 3 - Show that 2.4 J of work is done when a force of...Ch. 3 - Calculate the work done when a 20-N force pushes a...Ch. 3 - Show that when a 3.0-kg book is lifted 2.0 m, its...Ch. 3 - Show that the gravitational potential energy of a...Ch. 3 - Show that the kinetic energy of a 1.0-kg book...Ch. 3 - Calculate the kinetic energy of a 84-kg scooter...Ch. 3 - Show that 24 J of work is done when a 3.0-kg block...Ch. 3 - Show that a 2,500,000-J change in kinetic energy...Ch. 3 - Show that 50 W of power is required to give a...Ch. 3 - Show that nearly 786 W of power is expended when a...Ch. 3 - Show that the efficiency of a machine that has an...Ch. 3 - In Chapter 1 we learned that acceleration a=vt,...Ch. 3 - A 10-kg bag of groceries is tossed onto a table at...Ch. 3 - An ostrich egg of mass m is tossed at a speed v...Ch. 3 - A 6-kg bail rolling at 3 m/s bumps into a pillow...Ch. 3 - At a baseball game, a ball of mass m = 0.15 kg...Ch. 3 - Jeannie Beanie (mass 40 kg), standing on slippery...Ch. 3 - A railroad diesel engine weighs four times as much...Ch. 3 - A 5-kg fish swimming at 1 m/s swallows an...Ch. 3 - Little Hudson (next page) holds the 10-kgbarbell...Ch. 3 - It you push a crate horizontally with a force of...Ch. 3 - A simple lever is used to lift a heavy load. When...Ch. 3 - The following questions refer to Problem 60: (a)...Ch. 3 - In raising a 6000-N piano with a pulley system,...Ch. 3 - The girl steadily pulls her end of the rope upward...Ch. 3 - How many watts of power do you expend when you...Ch. 3 - Show that 480 W of power is expended by a...Ch. 3 - When an average force F is exerted over a certain...Ch. 3 - Emily holds a banana of mass m over the edge of a...Ch. 3 - Starting from rest, Megan Zooms down a...Ch. 3 - The balls have different masses and speeds. Rank...Ch. 3 - Jogging Jake runs along a train flatcar that moves...Ch. 3 - Starting from rest, Marshall pushes crates across...Ch. 3 - A ball is released from rest at the left of the...Ch. 3 - The roller coaster ride starts from rest at point...Ch. 3 - Rank the scale readings from greatest to least....Ch. 3 - A lunar vehicle is tested on Earth at a speed of...Ch. 3 - In terms of impulse and momentum, why do airbags...Ch. 3 - Why are todays autos designed to crumple upon...Ch. 3 - If you throw a raw egg against a wall, youll break...Ch. 3 - In terms of impulse and momentum, when a boxer is...Ch. 3 - To throw a ball, do you exert an impulse on it? Do...Ch. 3 - Bronco dives from a hovering helicopter and finds...Ch. 3 - A pair of skaters who are initially at rest push...Ch. 3 - When you are traveling in your car at highway...Ch. 3 - You are at the front of a floating canoe near a...Ch. 3 - If you throw a ball horizontally while standing on...Ch. 3 - A fully dressed person is at rest in the middle of...Ch. 3 - Prob. 87ECh. 3 - In the previous chapter, rocket propulsion was...Ch. 3 - When vertically falling sand lands in a...Ch. 3 - In a movie, the hero jumps straight down from a...Ch. 3 - Freddy Frog drops vertically from a tree onto a...Ch. 3 - If your friend pushes a stroller four times as far...Ch. 3 - Which requires more work: stretching a strong...Ch. 3 - Two people of the same weight climb a flight of...Ch. 3 - Why do you run out of breath when running up the...Ch. 3 - A friend says that when twice as much works is...Ch. 3 - Compared with a pickup truck moving at a certain...Ch. 3 - When a cannon with a long barrel is fired, the...Ch. 3 - At what point in its motion is the KE of a...Ch. 3 - A physics instructor demonstrates energy...Ch. 3 - On a playground slide, a child has potential...Ch. 3 - Consider the identical balls released from rest on...Ch. 3 - Prob. 103ECh. 3 - In the absence of air resistance, a snowball...Ch. 3 - Youre on a rooftop and you throw one snowball...Ch. 3 - When a driver applies the brakes 10 keep a car...Ch. 3 - When the mass of a moving object is doubled, with...Ch. 3 - When the velocity of an object it doubled, by what...Ch. 3 - Which, if either, has greater momentum a 1-kg ball...Ch. 3 - If an objects kinetic energy is zero, what is its...Ch. 3 - If your momentum is zero, is your kinetic energy...Ch. 3 - Two lumps of clay with equal and opposite momenta...Ch. 3 - Consider Charlottes swinging-balls apparatus. If...Ch. 3 - Discuss the physics that explains how the girl in...Ch. 3 - Why bother using a machine if it cannot multiply...Ch. 3 - In the pulley system shown, Block A has a mass of...Ch. 3 - If an automobile had a 100% efficient engine,...Ch. 3 - The energy we need to live comes from chemically...Ch. 3 - To combat wasteful habits, we often speak of...Ch. 3 - What is the argument that dry-rock geothermal...Ch. 3 - What is the argument that the energy provided by a...Ch. 3 - What is the fuel that power a fuel cell in...Ch. 3 - Prob. 123ECh. 3 - Railroad cars are loosely coupled so that there is...Ch. 3 - Your friend says that the law of momentum...Ch. 3 - An ice sailcraft is stalled on a frozen lake on a...Ch. 3 - Will your answer to Question 126 be different if...Ch. 3 - Discuss the advisability of simply removing the...Ch. 3 - Suppose that three astronauts outside a spaceship...Ch. 3 - Discuss whether something can have energy without...Ch. 3 - Arrange the following four energy-transforming...Ch. 3 - What are the roles of water, energy, hydrogen, and...Ch. 3 - Does a car burn more fuel when its lights are...Ch. 3 - This may seem like an easy question for a physics...Ch. 3 - Your friend says that one way to improve air...Ch. 3 - Does the electric power produced by wind-powered...Ch. 3 - A red ball of mass m and a blue ball of mass 2m...Ch. 3 - No work is done by gravity on a bowling ball...Ch. 3 - Consider a bob attached by a stringa simple...Ch. 3 - Consider a satellite in a circular orbit above...Ch. 3 - A freight train rolls along a track with...Ch. 3 - In the absence of external forces, momentum is...Ch. 3 - If the running speed of Fast Freda doubles, what...Ch. 3 - Which of the following equations best illustrate s...Ch. 3 - Which of the following equations is most useful...Ch. 3 - How much work is done on a 200-kg crate that is...Ch. 3 - A circus diver drops from a high pole into water...Ch. 3 - A bicycle that travels twice as fast as another...Ch. 3 - A bicycle that travels twice as fast as another...Ch. 3 - A machine cannot multiply (a) force. (b) distance....
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Check Your Understanding What potential energy U(x) can you substitute in Equation 8.13 that will result in motion with constant velocity of 2 m/s for a particle of mass 1 kg and mechanical energy 1 J?arrow_forwardA ball of clay falls freely to the hard floor. It does not bounce noticeably, and it very quickly comes to rest. What, then, has happened to the energy the ball had while it was falling? (a) It has been used up in producing the downward motion. (b) It has been transformed back into potential energy. (c) It has been transferred into the ball by heat. (d) It is in the ball and floor (and walls) as energy of invisible molecular motion. (e) Most of it went into sound.arrow_forwardIntegrated Concepts A 105-kg basketball player crouches down 0.400 m while waiting to jump. After exerting a force on the floor through this 0.400 m, his feet leave the floor and his center of gravity rises 0.950 m above its normal standing erect position. (a) Using energy considerations, calculate his velocity when he leaves the floor. (b) What average force did he exert on the floor? (Do not neglect the force to support his weight as well as that to accelerate him.) (c) What was his power output during the acceleration phase?arrow_forward
- Ignoring details associated with friction, extra forces exerted by arm and leg muscles, and other factors, we can consider a pole vault as the conversion of an athlete’s running kinetic energy to gravitational potential energy. If an athlete is to lift his body 4.8 m during a vault, what speed must he have when he plants his pole?arrow_forwardThe force exerted by a diving board is conservative, provided the internal friction is negligible. Assuming friction is negligible, describe changes in the potential energy of a diving board as a swimmer drives from it, starting just before the swimmer steps on the board until just after his feet leave it.arrow_forwardEnergy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is 1 kilocalorie, which we define in Chapter 11 as 1 kcal = 4 186 J. Metabolizing 1 gram of fat can release 9.00 kcal. A student decides to try to lose weight by exercising. She plans to run up and down the stairs in a football stadium as fast as she can and as many times as necessary. Is this in itself a practical way to lose weight? To evaluate the program, suppose she runs up a flight of 80 steps, each 0.150 m high, in 65.0 s. For simplicity, ignore the energy she uses in coming down (which is small). Assume that a typical efficiency for human muscles is 20.0%. This means that when your body converts 100 J from metabolizing fat, 20 J goes into doing mechanical work (here, climbing stairs). The remainder goes into internal energy. Assume the students mass is 50.0 kg. (a) How many times must she run the flight of stairs to lose 1 pound of fat? (b) What is her average power output, in watts and in horsepower, as she is running up the stairs?arrow_forward
- Rank the following quantities of energy from largest to smallest. State if any are equal. (a) the absolute value of the average potential energy of the SunEarth system (b) the average kinetic energy of the Earth in its orbital motion relative to the Sun (c) the absolute value of the total energy of the SunEarth systemarrow_forwardIn Chapter 7, the work-kinetic energy theorem, W = K, was introduced. This equation states that work done on a system appears as a change in kinetic energy. It is a special-case equation, valid if there are no changes in any other type of energy such as potential or internal. Give two or three examples in which work is done on a system but the change in energy of the system is not a change in kinetic energy.arrow_forwardA particle of mass 2.0 kg moves under the influence of the force F(x)=(3/x)N. If its speed at x=2.0 m is v=6.0 m/s, what is its speed at x = 7.0 m?arrow_forward
- At the start of a basketball game, a referee tosses a basketball straight into the air by giving it some initial speed. After being given that speed, the ball reaches a maximum height of 4.25 m above where it started. Using conservation of energy, find a. the balls initial speed and b. the height of the ball when it has a speed of 2.5 m/s.arrow_forwardA roller-coaster car of mass 1.50 103 kg is initially at the top of a rise at point . It then moves 35.0 m at an angle of 50.0 below the horizontal to a lower point . (a) Find both the potential energy of the system when the car is at points and and the change in potential energy as the car moves from point to point , assuming y = 0 at point . (b) Repeat part (a), this time choosing y = 0 at point , which is another 15.0 m down the same slope from point .arrow_forwardA mechanic pushes a 2.50 103-kg car from rest to a speed of v, doing 5.00 103 J of work in the process. During this time, the car moves 25.0 m. Neglecting friction between car and road, find (a) v and (b) the horizontal force excited on the car.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning