How much do you have to increase the amplitude of a wave to cause its energy to quadruple?

1 Answer
Feb 7, 2018

Just two times.


It is generally true that #E prop A^2# where E is the energy carried by the wave and A is the amplitude.

This is taken into account as many of the common scales for measuring wave energy (Richter, Decibel, Beaufort etc) include some kind of logarithmic factor.