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Work And Machines
Test Description: Ch 8 Test
Instructions: Answer all questions to get your test result.
1) Comparing a machine's work output with work input
A
mechanical efficiency
B
power
C
mechanical advantage
D
work
2) The product of the input force and distance through which it is exerted
A
work output
B
work input
C
work
D
power
3) A machine with a bar that pivots on a fixed point
A
ramp
B
wheel and axle
C
lever
D
pulley
4) The product of the output force and the distance through which it is exerted
A
work output
B
work input
C
work
D
power
5) The unit used to express power
A
joule
B
volt
C
watt
D
Newton
6) A device that makes work easier by changing the size or direction of a force
A
lever
B
machine
C
power
D
pulley
7) A unit used to express work
A
amp
B
watt
C
jould
D
volt
8) A machine with two circular devices of different sizes
A
pulley
B
wheel and axle
C
block and tackle
D
lever
9) A machine made of two or more simple machines
A
mechanism
B
compound machine
C
complex machine
D
single machine
10) The transfer of energy that caused an object to move in the direction of the force
A
watt
B
power
C
machine
D
work
*select an answer for all questions
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