The amplitude of a wave decreases gradually as the wave travels down a long, stretched string. what happens to the energy of the wave when this happens? (the frequency is the same).

energy decreases

Explanation:

The energy of a wave is directly proportional to the square of amplitude of a wave.

Amplitude is defined as the maximum displacement of the wave particle from its mean position.

So, as the amplitude goes on decreasing, the energy of the wave is also decreasing.

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