Give two reasons why circular water waves decrease in amplitude as they travel away from the source.

1. Friction in the water
2. Although they keep the same energy as the waves move out, the energy spread out over a larger circle results in less energy at each point of the circle.

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Cricetus Cricetus · Answer 2 · 2021-09-25T15:56:01+02:00

The reasons behind the circular water waves decrease in amplitude as they travel away from the source.

The energy circular still has an increasing radius so the total energy is equally dispersed around it. As even the circumference increases, power generation decreases per length of pipe.
Because of power dissipation mostly by the median movement of the waveform. Friction as well as other non-conservative factors would attempt to remove as well as change the power of the waveform towards a different ones.

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