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Identify energy possessed by rolling sto...

Identify energy possessed by rolling stone

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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. Seema tried to push a heavy rock of 100 kg for 200s but could not move...

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  2. At what speed of a body of mass 1 kg will have a kinetic energy of 1J?

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  3. Identify energy possessed by rolling stone

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  4. Identify energy possessed by running athelete.

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  5. How much work is done by a weight lifter when he holds a weight of 80 ...

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  6. A force of 10 N moves a body with a constatn speed of 2ms^-1. Calculat...

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  7. A car and a truck are moving with the same velocity of 60 kmh^-1. Whic...

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  8. What will be the kinetic energy of a body when its mass is made four t...

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  9. A body is thrown vertically upwards. Its velocity goes on decreasing. ...

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  10. State the energy conversion in a dry cell.

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  11. A coolie is walking on a railway platform with a load of 30 kg on his ...

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  12. What is the work done by earth in moving around the sun?

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  13. When displacement is in a direction opposite to the direction of force...

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  14. Define 1kWh.

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  15. In an oscillating pendulum, at what positions are the potential and ki...

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  16. How many joules are present in 1 kilowatt hour?

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  17. Name the term used for the sum of kinetic and potential energy of a bo...

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  18. What type of energy conversion takes place in a thermal power plant?

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  19. If the heart works 60 joules in one minute. What is its power?

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  20. State the value of commercial unit of electrical energy in joule.

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