Challenge topic: Electromagnet

Question

all waves carry energy. We readily see this in ocean waves, seismic waves, and sound blasts. Electromagnetic waves also carry energy in the form of electromagnetic radiation. the greater the frequency of the wave, the greater the energy it possesses. how can you express this relationship in a mathematical equation

Answer 1

E = hf where h is Planck's constant  

Answer 2

let E be energy, f be frequency, and k be some constant.

E = kf