the electric field in an electromagnetic wave is in the y-direction and described by Ey = E0cos(kx - ωt), where E0 = 165 N/C.
a. if the elegtromagnetic wave is traveling in the x-direction in vacuum, what is the direction of the magnetic field?
b. express the smplitudo of the magnetic field B0, in terms of E0 and the speed of light c.
c. find the intensity of the electromagnetic wave, I, in terms of E0, c, and the permeability of free space µ0.
d. solve for the numerical value of I in watts per square meter.