Question

which of the following does not possess mechanical energy?
A. pushing a cart
B.pedalling a bike
C.tapping the drums
D.a lighted bulb

how is light energy different from sound energy?
A.light energy moves slower than sound
B.light helps you see whilw sound lets you hear
C.light energy uses vibration while sound does not
D.none of the above
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Answer 1

Answer:

1-Option -B

2-Option -A

Explanation:

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Answer 2

A light bulb does not possess mechanical energy. (Option D)

• Kinetic energy and potential energy together form mechanical energy.
• Kinetic energy is associated with motion and potential energy is associated with the position of the object.
• Hence, pushing a cart, pedaling a bike, and tapping the drums involve mechanical energy.
• A bulb gets lighted up because of the flow of electrons through its filament and neither due to any motion of the bulb nor its position.