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Question

A satellite gets unstable in its orbit and starts falling towards the earth. It catches fire as soon as it starts falling. If the satellite had a potential energy of 1000 joules initially and by the time it reaches the surface of 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

Potential Energy = Kinetic Energy + Heat Energy

1000 = 500 + heat energy

Heat energy = 500 J


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