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What is the work done by the force of gr...

What is the work done by the force of gravity on a satellite moving round the Earth ? Justify your answer.

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MBD -HARYANA BOARD-WORK, ENERGY AND POWER-Example
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  2. An object of mass 40 kg is raised to a height of 5 m above the ground....

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  3. What is the work done by the force of gravity on a satellite moving ro...

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  4. Can there be a displacement of any object in the absence of any extern...

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  5. A person holds a bundle of hay over his head for 30 minutes and gets t...

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  6. An electric heater is rated 1500W. How much energy does it use in 10 ...

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  7. An electric heater is rated 1500 W. How much energy does it use in 10 ...

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  8. An object of mass m is moving with a constant velocity upsilon How muc...

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  9. Calculate the work required to be done to stop a car of 1500 kg moving...

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

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  11. Explain the law of conservation of charge with the help of a suitable ...

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  12. If the force acting on the object is not in the direction of motion th...

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  13. Define power and its SI unit.?

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  14. Can a given amount of mechanical energy be completely converted into h...

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  15. Differentiate between Potential Energy and Kinetic Energy.

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  16. (a) What do you understand by the kinetic energy of a body ? (b) A b...

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  17. Two masses m and 2m are dropped from height h and 2h. On reaching the ...

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  18. Two objects having same mass 'm' are moving with velocities v and 2v. ...

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  19. A man drops a 10 kg rock from the top of a 20 m ladder. What will be i...

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  20. A rocket of maxx 3xx10^6kg takes off from a launching pad and acquires...

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