electromagnetic waves (small reward)

1. The problem statement, all variables and given/known data



A wave propagates in the x direction with the field E(y) = E_o(cos(omegat - kx + phi),



Find the magnetic field

Energy density

Energy flux



2. Relevant equations



'triangle' x E = -dB/Dt (the triangle is the mathematical d/dx + d/dy + d/dz?)



3. The attempt at a solution







Reward will be in bitcoins of good solutions