Phys 165 Module 4 Exam with answers |\ |\ |\ |\ |\ |\
What is the process of producing change in the environment
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called? - CORRECT ANSWERS ✔✔Work |\ |\ |\ |\
What is the unit for both energy and work? - CORRECT ANSWERS
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✔✔Joules
Which of the following changes will decrease the amount of work
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done by a force - CORRECT ANSWERS ✔✔a) Make the force as
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large as possible |\ |\
b) Increase the angle between the force and the displacement
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c) Apply the force over a larger displacement
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d) Apply the force in the same direction as the displacement
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Answer: B |\
How can a waiter apply a force to a tray and NOT do any work on
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it? - CORRECT ANSWERS ✔✔Either apply the force in a direction
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that is perpendicular to the displacement, have no displacement
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When the energy of a system increases, what type of work is
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most likely done ON that system? - CORRECT ANSWERS ✔✔a)
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positive work |\
b) negative work
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c) zero work
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, d) there is no relationship between work and energy
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Answer: A |\
Which two of the follow will affect the amount of work you do in
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lifting a book onto a shelf? - CORRECT ANSWERS ✔✔a) the path
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that the book takes as you lift it to the shelf
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b) the time it takes you to lift it to the shelf
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c) the height of the shelf
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d) the mass of the book
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Answer C and D |\ |\ |\
Which of the following forces is an example of a non-conservative
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force? - CORRECT ANSWERS ✔✔a) Electric
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b) Friction
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c) Gravity
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d) Magnetic
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Answer: B |\
True or False: A football is kicked into the air. As it rises, its
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kinetic energy decreases and its gravitational potential energy
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increases. - CORRECT ANSWERS ✔✔True |\ |\ |\ |\
What is the process of producing change in the environment
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
called? - CORRECT ANSWERS ✔✔Work |\ |\ |\ |\
What is the unit for both energy and work? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Joules
Which of the following changes will decrease the amount of work
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
done by a force - CORRECT ANSWERS ✔✔a) Make the force as
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
large as possible |\ |\
b) Increase the angle between the force and the displacement
|\ |\ |\ |\ |\ |\ |\ |\ |\
c) Apply the force over a larger displacement
|\ |\ |\ |\ |\ |\ |\
d) Apply the force in the same direction as the displacement
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Answer: B |\
How can a waiter apply a force to a tray and NOT do any work on
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
it? - CORRECT ANSWERS ✔✔Either apply the force in a direction
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
that is perpendicular to the displacement, have no displacement
|\ |\ |\ |\ |\ |\ |\ |\
When the energy of a system increases, what type of work is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
most likely done ON that system? - CORRECT ANSWERS ✔✔a)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
positive work |\
b) negative work
|\ |\
c) zero work
|\ |\
, d) there is no relationship between work and energy
|\ |\ |\ |\ |\ |\ |\ |\
Answer: A |\
Which two of the follow will affect the amount of work you do in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
lifting a book onto a shelf? - CORRECT ANSWERS ✔✔a) the path
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
that the book takes as you lift it to the shelf
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
b) the time it takes you to lift it to the shelf
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
c) the height of the shelf
|\ |\ |\ |\ |\
d) the mass of the book
|\ |\ |\ |\ |\
Answer C and D |\ |\ |\
Which of the following forces is an example of a non-conservative
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force? - CORRECT ANSWERS ✔✔a) Electric
|\ |\ |\ |\ |\ |\
b) Friction
|\
c) Gravity
|\
d) Magnetic
|\ |\
Answer: B |\
True or False: A football is kicked into the air. As it rises, its
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
kinetic energy decreases and its gravitational potential energy
|\ |\ |\ |\ |\ |\ |\ |\
increases. - CORRECT ANSWERS ✔✔True |\ |\ |\ |\
