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Can P.E. of an object be negative?...

Can P.E. of an object be negative?

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SL ARORA-Work, Energy and power-EXERCISE
  1. Does a single force acting an a particle necessarily change its K.E. a...

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  2. Can the K.E. of a body be negative

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  3. Can P.E. of an object be negative?

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  4. Out of joule, calorie, kilowatt and electron volt, which one is not th...

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  5. Define mechanical energy and law of conservation of mechanical energy....

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  6. What type of energy is stored in the spring of a watch?

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  7. When an air bubble rises in water, what happens to its potential energ...

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  8. What kind of energy transformations take place at a hydroelectric powe...

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  9. A spring is cut into two equal halves. How is the spring constant of e...

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  10. Define power and its SI unit.?

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  11. The unit same as the watt second.

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  12. What are the dimensions of power ?

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

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

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

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

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

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

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

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

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