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Question

# A satellite gets unstable in its orbit, starts to fall towards the earth and also starts burning. If the satellite had a potential energy of 1000 MJ initially and by the time it reaches the surface the earth, it attains a kinetic energy of 500 MJ. Then, how much energy is spent as heat generated on the satellite?

A

1000J

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B

5000J

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C

500J

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D

None of These

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Solution

## The correct option is C 500J potential energy is converted to kinetic energy and heat. Using the law of conservation of energy, PE = KE + Heat Energy 1000 = 500 + heat energy heat energy = 500 MJ

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