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Prove by an experiment that mechanical e...

Prove by an experiment that mechanical energy can be transformed into heat energy.

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MBD-WORK, ENERGY AND POWER-Example
  1. A stone tied to one end of string is moved in a circle. How much work ...

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  2. What is power ? Write its SI unit also.

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  3. Prove by an experiment that mechanical energy can be transformed into ...

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  4. Differentiate between Potential Energy and Kinetic Energy.

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  5. A horse and a dog are running with the same velocity- If the mass of h...

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

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

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

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  9. A rocket of 3 xx10^6 kg mass takes off from a launching pad and acquir...

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  10. An electric heater of 1000W is used for 2 hours a day. What is the cos...

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  11. The power of a motor pump is 5 kW. How much water per minute the pump ...

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  12. Calculate the electricity bill amount for the month of November of a f...

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  13. A person carrying 10 bricks each of mass 2.5 kg. on his head moves to ...

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  14. A car of 1000 kg moving with a velocity of 30 m//s stops with uniform ...

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  15. A car is moving with a speed of 54 km//h. What will be the kinetic ene...

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  16. 1 Joule of energy is used for one heart beat. Calculate the power of t...

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  17. State the relation between commercial unit of energy and joules.

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  18. How much work is done on a body of mass 1 kg whirling on a circular pa...

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  19. What is the SI unit of power ?

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  20. A ball is thrown vertically upwards. Its velocity keeps on decreasing....

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