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