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Find the energy in kW h consumed in 10 h...

Find the energy in kW h consumed in 10 hours by four devices of power 500W each.

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PSEB-WORK AND ENERGY-EXERCISE
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  4. A mass of 10 kg is at a point A on a table. It is moved to a point B. ...

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  5. The potential energy of a freely falling object decreases progressivel...

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  6. What are the various energy transformations that occur when you are ri...

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  7. Does the transfer of energy takes place when you push a huge rock with...

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  8. A certain household has consumed 250 units of electric energy during a...

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  9. An object of mass 40 kg is raised to a height of 5 m above the ground....

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

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

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

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

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  14. Illustrate the law of conservation of energy by discussing the energy ...

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  15. An object of mass, m is moving with a constant velocity,v. How much wo...

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

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  17. In each of the following a force,F is acting on an object of mass,m. T...

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  18. Soni says that the acceleration in an object could be zero even when s...

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  19. Find the energy in kW h consumed in 10 hours by four devices of power ...

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  20. A freely falling object eventually stops on reaching the ground. What ...

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