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The unit same as the watt second....

The unit same as the watt second.

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SL ARORA-Work, Energy and power-EXERCISE
  1. A spring is cut into two equal halves. How is the spring constant of e...

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  2. Define power and its SI unit.?

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  3. The unit same as the watt second.

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  4. What are the dimensions of power ?

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  5. How many watts are there in one horse power ?

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  6. Name the physical quantity, which is expressed as force times velocity...

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  7. For a planet revolving round the sun, when it is nearest to the sun

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  8. What is a conservative force ? Give one example.

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  9. Which physical quantities are conserved in an elastic collision?

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  10. Which physical quantity is conserved in both, elastic and inelastic co...

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  11. If two bodies stick together after collision. Will the collision be el...

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  12. A bullet gets embedded in a wooden block. Where does its KE go?

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  13. Give three examples of forces which are conservative in nature.

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  14. Friction is non-conservative force. How ?

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  15. Name the process in which (i) momentum is conserved but K.E. is not co...

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  16. A coolie with load on his head is walking on a horizontal platform. Wh...

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  17. An artificial satellite is at a height of 36,500 km above earth's surf...

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  18. Give two examples from daily life where according to physics, work don...

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  19. What is the source of KE of falling rain drops ?

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  20. State work-energy theorem.

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