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School Physics Quiz : Work & Energy


Answer the following questions based on work & energy.

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Multiple choice

Your Performance  

1.

Power is the rate of doing work.

  True

  False

 

2.

The SI unit of power is

  Volt

  Watt

  Joule

  Half-n-half Clue
 

3.

A carton is pulled along the ground for a distance of 8 m. If the average frictional force is 91 N, then the work done is

  5824 J

  91 J

  728 J

  8 J

  Half-n-half Clue
 

4.

A machine that produces 126 J of work by using 140 J of energy has an efficiency of

  90 %

  18 J

  10 %

  14 J

  Half-n-half Clue
 

5.

If an engine does 776 J of work in 8 seconds, its average power is

  784 W

  97 W

  6208 W

  768 W

  Half-n-half Clue
 

6.

By definition, work is done when a _______ moves through a distance.

  force

  pressure

  mass

  Half-n-half Clue
 

7.

_______ is the capacity to do work.

  Energy

  Force

  Pressure

  Half-n-half Clue
 


 
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