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State gravitational unit of work in SI....

State gravitational unit of work in SI.

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SL ARORA-Work, Energy and power-EXERCISE
  1. How many joules make up one erg ?

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  2. What do you mean by gravitational unit of work ?

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  3. State gravitational unit of work in SI.

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  4. Find the number of joules in the gravitational unit of work in SI.

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  5. A man runs a distance on a level road. The same man ascends up a hill ...

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  6. Give an example in which a force does work on a body but fails to chan...

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  7. Does the work done in moving a body depend on how fast or how slow the...

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  8. Give an example in which work done is negative.

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  9. Has an object in motion ability to do work ?

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  10. Does a single force acting an a particle necessarily change its K.E. a...

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

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

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

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

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

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

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

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

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  19. Define power and its SI unit.?

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  20. The unit same as the watt second.

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