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Energy

Which of the ...

Question

Which of the following energy change involves frictional force?

(a) chemical energy to heat energy
(b) kinetic energy to heat energy
(c) potential energy to sound energy
(d) chemical energy to kinetic energy

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Solution

Frictional force is responsible for heating up of the tires of a moving vehicle. In such a situation, kinetic energy is converted into heat energy due to the frictional force.
Therefore the answer is,
(b) Kinetic energy to heat energy.

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Which of the following energy change involves frcitional force ?

(a) chemical energy to heat energy

(b) kinetic energy to heat energy

(c) potential energy to sound energy

(d) chemical energy to kinetic energy

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(2) Food	(b) Atomic energy
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(4) Sunlight	(d) Potential energy
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