What part of the wave determines how much energy it has? A.) amplitude B.) period C.) velocity D.) wavelength

The energy transported by a wave along a string is of the form

E = (1/2) ρω²A²v

where

ρ = mass density per unit length

ω = angular velocity

A = amplitude

v = wave speed = wavelength/period

Of the four choices given, the amplitude is squared, therefore it will determine maximum energy.

Answer: A. amplitude