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Express a unit of electrical energy in t...

Express a unit of electrical energy in terms of joule.

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1 electrical unit = 1 kWh
`=1xx(10^(3)W)xx(3600s)`
1 electrical unit = `3600xx10^(3)Ws`
1 electrical unit = `3.6xx10^(6)J`
`1kWh=3.6xx10^(6)J`
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PREMIERS PUBLISHERS-WORK, ENERGY AND POWER -SHORT ANSWER QUESTIONS
  1. What is meant conservative force?

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  2. What is non-conservative force?

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  3. Express a unit of electrical energy in terms of joule.

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  4. What is a perfect inelastic collision ? Derive the expression of the c...

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  5. What do you mean by ''Perfect elastic''?

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  6. Write three conditions under which work done is zero.

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  7. Discuss the results of work-Energy theorem.

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  8. Explain how the definition of work in physics is different from genera...

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  9. Write the various types of potential energy. Explain the formulae.

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  10. Write the differences between conservative and Non - conscrvative forc...

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  11. Explain the characteristics of elastic and inelastic collision.

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  12. Define the following. Coefficient of restitution

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  13. Define the following. Power

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  14. Define the following. Law of conservation of energy

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  15. Define the following: Loss of kinetic energy in inelastic collision

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  16. State the factors on which the work done by the force depends on.

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  17. Define the different types of potential energy.

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  18. How can an object move with zero acceleration (constant velocity) when...

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  19. A light body and a heavy body have the same kinetic energy. Which one ...

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  20. What sort of energy is associated with a flying bird in air?

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