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Name the physical quantity, which is exp...

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

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SL ARORA-Work, Energy and power-EXERCISE
  1. What are the dimensions of power ?

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

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

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

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

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

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

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

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

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

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  11. Friction is non-conservative force. How ?

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

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

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

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

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

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  17. State work-energy theorem.

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  18. What is spring constant ? What are its SI units?

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  19. Calculate the number of joules in 1 kWh?

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  20. Show that 1J = 10^7erg

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