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Energy, Work, Machines
Test Description: Final Exam Review Part D
Instructions: Answer all questions to get your test result.
1) Potential Energy is:
A
energy of motion.
B
energy that has been destroyed.
C
stored energy.
D
energy that is spontaneously created.
2) A person sweeping a floor would be an example of a:
A
3rd class lever
B
2nd class lever
C
1st class lever
3) Both work and energy can be measured in:
A
horsepower
B
joules
C
newtons
D
watts
4) On a roller coaster, the bottom of a steep hill would feature a high level of:
A
kinetic energy
B
potential energy
5) Which of the following simple machines make up a pair of scissors?
A
pulley
B
wedge
C
both lever and wedge
D
lever
6) A crane does 4000 J of work in 5 seconds. What is the power of the crane?
A
20000 watts
B
1600 watts
C
40000 watts
D
800 watts
7) What is the kinetic energy of a 23 kg cart going 9 m/s?
A
2.6 J
B
186.3 J
C
932 J
D
207 J
8) A light bulb is considered to be doing work because it is converting electrical energy into light and thermal energy.
A
True
B
False
9) A 59,000 kg on the edge of a 200 m high cliff would have a potential energy of:
A
295 J
B
118,000,000 J
C
11,800,000 J
10) 12 HP is equivalent to:
A
.016 watts
B
62.2 watts
C
8952 watts
D
150 watts
*select an answer for all questions
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