Conceptual Integrated Science
3rd Edition
ISBN: 9780135197394
Author: Hewitt, Paul G., LYONS, Suzanne, (science Teacher), Suchocki, John, Yeh, Jennifer (jennifer Jean)
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 4, Problem 15RCQ
In what units are work and energy measured?
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Chapter 4 Solutions
Conceptual Integrated Science
Ch. 4 - Which has a greater momentum-a heavy truck at rest...Ch. 4 - How can a huge ship have an enormous momentum when...Ch. 4 - How does impulse differ from force?Ch. 4 - What are the two ways in which the impulse exerted...Ch. 4 - For the same force, which cannon imparts the...Ch. 4 - Consider a baseball that is caught and thrown at...Ch. 4 - In the preceding question, which case requires the...Ch. 4 - Can you produce a net impulse on an automobile by...Ch. 4 - What does it mean to say that a quantity is...Ch. 4 - Distinguish between an elastic collision and an...
Ch. 4 - Railroad car A rolls at a certain speed and...Ch. 4 - If the equally massive cars of the preceding...Ch. 4 - When is energy most evident?Ch. 4 - What do we call the quantity force distance, and...Ch. 4 - In what units are work and energy measured?Ch. 4 - True or false: One watt is the unit of power...Ch. 4 - How many watts of power are expended when a force...Ch. 4 - A car is lifted a certain distance in a service...Ch. 4 - Two cars, one twice as heavy as the other, are...Ch. 4 - When a car travels at 50 km/h, it has kinetic...Ch. 4 - What is the evidence for saying whether or not...Ch. 4 - The brakes do a certain amount of work to stop a...Ch. 4 - Cite the law of energy conservation.Ch. 4 - What is the source of energy that powers a...Ch. 4 - Can a machine multiply input force? Input...Ch. 4 - A force of 50 N applied to the end of a lever...Ch. 4 - Is it possible to design a machine that has an...Ch. 4 - a Why is it a good idea to have your hand extended...Ch. 4 - In Figure 4.8, how does the force that Cassy...Ch. 4 - How will the impulse differ if Cassys hand bounces...Ch. 4 - We know that falling on a mat is preferable to...Ch. 4 - In terms of the impulse-momentum relationship,...Ch. 4 - The word burn is often used to describe the...Ch. 4 - In what sense are you powered by solar energy?Ch. 4 - Calculate the momentum of a 10-kg bowling ball...Ch. 4 - Show that the momentum of a 50-kg carton that...Ch. 4 - Calculate the impulse that occurs when an average...Ch. 4 - Show that an impulse of 100 Ns occurs when the...Ch. 4 - Calculate the work done when a force of 2 N moves...Ch. 4 - Show that 45 J of work is done when a 15-N force...Ch. 4 - Calculate the watts of power expended when a force...Ch. 4 - Show that 140 W of power is expended when a 20-N...Ch. 4 - How much PE does a 1.5 kg book gain when lifted 2...Ch. 4 - Show that there is a 600-J increase in potential...Ch. 4 - Calculate the KE of a 1-kg parrot flying at 6 m/s.Ch. 4 - Show that the KE of a 3-kg dog running at 4 m/s is...Ch. 4 - How much work is required to increase the kinetic...Ch. 4 - Show that a 50-J change in kinetic energy occurs...Ch. 4 - The mass and speed of three vehicles, A, B and C,...Ch. 4 - The roller coaster stats from rest at point A....Ch. 4 - Rank the scale readings from greatest to least...Ch. 4 - A car with a mass of 1000kgmoves at 20m/s. Show...Ch. 4 - A railroad diesel engine weighs four times as much...Ch. 4 - A 5kg fish swimming at 1m/s swallows an absent...Ch. 4 - What would be the speed of the larger fish if the...Ch. 4 - Jeannie Beanie mass 40kg, standing on a slippery...Ch. 4 - Consider the inelastic collision between the two...Ch. 4 - This question is typical on some drivers licence...Ch. 4 - In the hydraulic machine shown, it is observed...Ch. 4 - Consider a car with 25% efficient engine that and...Ch. 4 - When a cyclist expends 1000W of power to deliver...Ch. 4 - The decrease in PE of a freely falling object...Ch. 4 - A Mars vehicle is tested on Earth at a speed of...Ch. 4 - How can the momentum of a speeding bullet be the...Ch. 4 - Distinguish between force and impulse. .Ch. 4 - What are the two ways to increase or decrease...Ch. 4 - Why are automobiles designed to crumple upon...Ch. 4 - Why might a glass wine survive a fall onto a...Ch. 4 - If you throw an egg against a wall, the egg will...Ch. 4 - Railroad cars are loosely coupled so that there is...Ch. 4 - When a cannon with a long barrel is fired, the...Ch. 4 - Why does Howies block Figure 4.3 topple when the...Ch. 4 - You are on small raft next to a dock, and you jump...Ch. 4 - When travelling in your car at highway speed, the...Ch. 4 - Freddy Frog drops vertically from a tree onto a...Ch. 4 - Prob. 81TECh. 4 - Can something have energy without having momentum?...Ch. 4 - Which requires more work: stretching a strong...Ch. 4 - Why do you run out of breath when running up the...Ch. 4 - Distinguish between work and power.Ch. 4 - Relative to the floor in a library, books on the...Ch. 4 - If 300 joules is required to lift an object to a...Ch. 4 - When the velocity of an object is doubled, by what...Ch. 4 - You and a flight attended tosses a ball back and...Ch. 4 - A child can throw a baseball at 20 mph. Some...Ch. 4 - Prob. 91TECh. 4 - When a cannon with a long barrel is fired, the...Ch. 4 - Consider a pendulum swinging to and fro. At what...Ch. 4 - A physics instructor demonstrates energy...Ch. 4 - An apple hanging from a limb has potential energy...Ch. 4 - In an effort to combat wasteful habits, we often...Ch. 4 - Why bother using a machine if it cannot multiply...Ch. 4 - In the ideal pulley system shown, Block A has mass...Ch. 4 - Why is a punch more powerful with a bare fist than...Ch. 4 - A boxer can punch a heavy bag for more than an...Ch. 4 - A fully dressed person is at rest in the middle of...Ch. 4 - Why is it difficult for a firefighter to hold a...Ch. 4 - If a Mack truck and Honda Civic have a head-on...Ch. 4 - If an automobile has an engine that was 100%...Ch. 4 - Discuss the design of the roller coaster shown in...Ch. 4 - Consider the identical balls released from rest on...Ch. 4 - Consider the swinging balls apparatus shown. If...Ch. 4 - A freight train rolls along a track with...Ch. 4 - If Fast Freda doubles her running speed, she also...Ch. 4 - A big fish swims upon and swallows a small fish at...Ch. 4 - Which of these equations best illustrates the...Ch. 4 - Which of these equations is best for calculating...Ch. 4 - The power required to raise a 100-kg crate a...Ch. 4 - A model car with three times as much speed as...Ch. 4 - Nellie lifts a 100-N crate with an ideal pulley...Ch. 4 - When 100 J are put into a device that puts out 40...Ch. 4 - A simple machine CANNOT multiply a force. b...
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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
- KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4. energy (4.2) 5. kinetic energy 6. potential energy 7. gravitational potential energy 8. conservation of total energy (4.3) 9. conservation of mechanical energy 10. power (4.4) 11. watt 12. horsepower 13. kilowatt-hour 14. alternative energy sources (4.6) 15. renewable energy sources For each of the following items, fill in the number of the appropriate Key Term from the preceding list. n. _____ Time rate of doing workarrow_forwardA pitcher throws a fastball. When the catcher catches it, ___. (4.2) (a) positive work is done (b) negative work is done (c) the net work is zeroarrow_forwardA sled of mass 70 kg starts from rest and slides down a 10 incline 80 m long. It then travels for 20 m horizontally before starting back up an 8° incline. It travels 80 m along this incline before coming to rest. What is the magnitude of the net work done on the sled by friction?arrow_forward
- KEY TERMS 1. work (4.1) 2. joule 3. foot-pound 4. energy (4.2) 5. kinetic energy 6. potential energy 7. gravitational potential energy 8. conservation of total energy (4.3) 9. conservation of mechanical energy 10. power (4.4) 11. watt 12. horsepower 13. kilowatt-hour 14. alternative energy sources (4.6) 15. renewable energy sources For each of the following items, fill in the number of the appropriate Key Term from the preceding list. o. _____ The ability to do workarrow_forwardWork is equal to the force times the ___ distance through which the force acts. (4.1)arrow_forwardWhat is the dominant factor that affects the speed of an object that started from rest down a frictionless incline if the only work done on the object is from gravitational forces?arrow_forward
- The person shown below does work on the lawn mower. Under what conditions would the mower gain energy from the person pushing the mower? Under what conditions would it lose energy?arrow_forwardA rope having a total mass of 0.4 kg and total length 4 m has 0.6 m of the rope hanging vertically down off a work bench. How much work must be done to place all the rope on the bench?arrow_forwardWork is done on an object when it is ___. (4.1) (a) moved (b) stationary (c) acted on by a balanced force (d) none of the precedingarrow_forward
- . A compact car can climb a hill in 10 s. The top of the hill is 30 in higher than the bottom, and the car’s mass is 1,000 kg. What is the power output of the car?arrow_forwardA student expends 7.5 W of power in lifting a textbook 0.50 m in 1.0 s with a constant velocity. (a) How much work is done, and (b) how much does the book weigh (in newtons)? The answers to Confidence Exercises may be found at the back of the book.arrow_forwardGive an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.arrow_forward
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