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Question

A satellite gets unstable in its orbit and starts to fall towards earth and also starts burning. If the satellite had a potential energy of 1000 joules initially and by the time it reaches the surface of the earth it attains a kinetic energy of 500 joules then how much energy is spent in heating 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 and heat.

So, 1000 = 500 + Heat energy

Heat energy = 500 J


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