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Why does air move from place to place?...

Why does air move from place to place?

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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. What type of energy is stored in the following cases? A stretched bo...

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  2. How do green plants produce food? Where do they get their energy from?

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  3. Why does air move from place to place?

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  4. How are fuels such as coal and petroleum formed?

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  5. The velocity of a body moving in a straight line is increased by apply...

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  6. Is it possible that a force is acting on a body but still work done is...

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  7. Two bodies of equal masses move with uniform velocities v and 3v respe...

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  8. Define 1 watt.

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  9. An electric bulb of 60 W is used for 6 hours per day. Calculate the un...

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  10. Define work. Give its SI and CGS unit. What is the relationship betwee...

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  11. Give an example for force acting in the direction of displacement.

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  12. Give an example for force acting against the direction of displacement...

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  13. Deifne potential energy. On what factors does potential energy depends...

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  14. A body is thrown vertically upwards with a speed u. When does its pote...

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  15. A body is thrown vertically upwards with a speed u. When does kinetic ...

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  16. A body is thrown vertically upwards with a speed u. When does P.E. = K...

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  17. Two girls, each of weight 400 N climb up a rope through a height of 8 ...

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  18. A mass of 10 kg is dropped form a height of 50 cm. Find its potential ...

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  19. A mass of 10 kg is dropped form a height of 50 cm. Find its kinetic en...

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  20. A mass of 10 kg is dropped form a height of 50 cm. Find its velocity w...

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