Answer:
Step-by-step explanation:
The energy of the wave its determined by the mass of the fuid of the wave and the speed. The amount of motion equation P= m.v
So according to the impulse and amount of motion theorem (ΔP= mvₙ- mv₀).
If the wave is acted upon by an external dumping force, the wave its going to decrease his energy because the reduction of the speed and the mass.