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When do we say that work is done ?...

When do we say that work is done ?

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MBD-WORK, ENERGY AND POWER-Example
  1. A force of 7 N acts on an object. The displacement is, say 8 m in the ...

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  2. When do we say that work is done ?

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  3. Write an expression for the work done when a force is acting on an obj...

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  4. A pair of bullocks exerts a force of 140 N on a plough. The field bein...

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  5. A pair of bullocks exerts a force of 140 N on a plough. The field bein...

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  6. Define 1 J of work.

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  7. Define kinetic energy?

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  8. Write an expression for the kinetic energy of an object.

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  9. The kinetic energy of an object of mass 'm' moving with a velocity of ...

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  10. What is Power ?

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  11. Define 1watt of Power.

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  12. A lamp consumes 1,000 J of electric energy in 10 s. What is its power ...

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  13. Define Average Power.

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  14. Look at the activities listed below. Reason out whether or not work is...

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  15. Look at the activities listed below. Reason out whether or not work is...

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  16. Look at the activities listed blew. Reson out whether or not work is d...

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  17. Look at the activities listed below. Reason out whether or not work is...

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  18. Look at the activities listed below. Reason out whether or not work is...

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  19. Look at the activities listed below. Reason out whether or not work is...

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  20. An object throw at a certain angle to the ground moves in a curved ...

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