Question

Suppose that a right-moving EM wave overlaps with a left-moving EM wave so that, in a certain region of space, the total electric field in the y direction and magnetic field in the z direction are given by

Ey=E0sin(kx−ωt)+E0sin(kx+ωt) and Bz=B0sin(kx−ωt)−B0sin(kx+ωt).

A) Find the mathematical expression that represents the standing electric wave in the y direction.

B) Find the mathematical expression that represents the standing magnetic wave in the z direction.

C) Determine the x, y, and z components of the Poynting vector.

Express your answers in terms of the variables E0, B0, k, x, ω, t, and μ0. Enter your asnwers separated by commas.

I got question A and B right so no need to show the work. They are just there for context.
How is question C found?

Answer 1

since you have done part a and b so i only do part c .