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Is power a scalar or vector ?...

Is power a scalar or vector ?

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Power is a scalar.
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PRADEEP-WORK, ENERGY AND POWER-Very Short Anwer Question.
  1. Does a man standing at rest on a moving truck possess KE?

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  2. Out of joule, calorie, kilowatt and electron volt, which one is not th...

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  3. Is power a scalar or vector ?

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  4. Name the physical quantity, which is expressed as force times velocity...

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  5. When is KE of a planet revolving around the sunn maximum?

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  6. What is work done by centripetal force in moving on body half-cycle on...

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  7. Show graphically the variation of potential energy of an object thrown...

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  8. What is spring constant ? What are its SI units?

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  9. Name the process in which momentum changes but KE does not.

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  10. What is the source of KE of falling rain drops ?

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  11. What is work done in holding a 15kg suitcase while waiting for a bus f...

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  12. Is it practically possible to have situtations where (E-V)lt0?

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  13. Can K.E. of a system be increased or decreased without applying any e...

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  14. Does the sun do any work on earth, when earth revoves around the sun i...

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  15. Does K.E. depend upon the direction of motion involved ? Can it be ne...

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  16. Name the largest and smallest practical unit of energy.

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  17. Is work done by a non conservative force always negative ? Comment.

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  18. Does potential energy of a spring decrease // increase when it is comp...

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  19. When an air bubble rises in water, what happens to its potential energ...

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  20. Name the process in which momentum changes but KE does not.

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