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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.

A carton is pulled along the ground for a distance of 11 m. If the average frictional force is 28 N, then the work done is

  28 J

  3388 J

  11 J

  308 J

  Half-n-half Clue
 

2.

Kinetic energy of a body in motion equals the product of half its mass and the square of its _______

  acceleration

  distance

  velocity

  Half-n-half Clue
 

3.

A machine that produces 52 J of work by using 80 J of energy has an efficiency of

  65 %

  13 J

  28 J

  35 %

  Half-n-half Clue
 

4.

If an engine does 630 J of work in 7 seconds, its average power is

  637 W

  90 W

  623 W

  4410 W

  Half-n-half Clue
 

5.

The energy possessed by a body due to its position or configuration is called _______ energy.

  thermal

  kinetic

  potential

  sound

  Half-n-half Clue
 

6.

When a current is supplied by a battery, _______ energy is converted to electrical energy.

  nuclear

  mechanical

  chemical

  Half-n-half Clue
 

7.

Both work and heat are measured in Joules.

  True

  False

 


 
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