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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
power
B
work
C
mechanical advantage
D
mechanical efficiency
2) The product of the input force and distance through which it is exerted
A
power
B
work output
C
work
D
work input
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
B
work input
C
work output
D
power
5) The unit used to express power
A
volt
B
joule
C
watt
D
Newton
6) A device that makes work easier by changing the size or direction of a force
A
pulley
B
machine
C
lever
D
power
7) A unit used to express work
A
watt
B
volt
C
amp
D
jould
8) A machine with two circular devices of different sizes
A
pulley
B
block and tackle
C
wheel and axle
D
lever
9) A machine made of two or more simple machines
A
compound machine
B
single machine
C
mechanism
D
complex machine
10) The transfer of energy that caused an object to move in the direction of the force
A
watt
B
power
C
work
D
machine
*select an answer for all questions
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