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Explain the difference between work, ene...

Explain the difference between work, energy and power. Give their expression and the units in which these are measured.

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PRADEEP-WORK AND ENERGY-Assessment Through paper pen Test
  1. Why does a saw become warm when it is used to cut a log of wood ? Stat...

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  2. What do you mean by kinetic energy ? Derive an expression for the kine...

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  3. The force exerted by a certain bow on an arrow decreases linearly afte...

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  4. Tarzan, who weighs 875 N, swings from a vine through the jungle. How m...

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  5. The sign of work done by a force is important to understant. State car...

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  6. A rod of mass m and length l is lying on a horizontal table. Work don...

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  7. A ball of mass 50 g is thrown upwards. It rises to a maximum height of...

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  8. A body of mass 2kg is projected vertically upwards with a speed of 3m/...

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  9. A body of mass m, accelerates uniformly from rest to V(1) in time t(1)...

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  10. At sea level, a nitrogen molecule in air has an average translational ...

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  11. The power of a water pump is 2 kW. If g = 10 m//s^2, the amount of wat...

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  12. Two idential objects made of iron and wood, are allowed to fall from t...

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  13. What kind of energy transformation take place in an electric fan and a...

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  14. State the energy transformation taking place when a boy is riding a bi...

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  15. A spring which is kept comprassed by tying its ends together is allowe...

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  16. An aeroplane's velocity is doubled, What happens to kinetic energy ? I...

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  17. Represent graphically the variation of kinetic energy (Ek), potential ...

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  18. A skier starts from rest at the top of a ski slope and skis downhill. ...

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  19. Water is pumped out of a well 10m deep by means of a pump rated at 10 ...

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  20. Explain the difference between work, energy and power. Give their expr...

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