How are the amplitude and energy of a wave related?

They are related by
1/2kx^2 = Energy of the wave
where x is the amplitude
2E/k =x^2
• k can also be written as
ma = Kx
ma/x = k
a = w^2r
thus k = w^2 * r/ x
2Ex /W^2*r = x^2
2E/w^2*r = x

Aform of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space. there are many forms of  electromagnetic  energy including gamma rays, x rays, ultraviolet radiation, visible light, infrared radiation, microwaves and radio waves.