An electromagnetic wave is traveling through vacuum in the positive x direction. It's electric field vector is given by E=E0sin(kx-wt)j where j is the unit vector in the y direction. What is the Poynting vector S(x,t), that is, the power per unit area associated with the electromagnetic wave described in the problem introduction? Give your answers in terms of some or all variables E0, B0, k, x, w, t, and mu0. Specify the direction using the unit vectors I, j, and k.

An electromagnetic wave is traveling through vacuum in the positive x direction. It's electric field vector is given by E=E0sin(kx-wt)j where j is the unit vector in the y direction. What is the Poynting vector S(x,t), that is, the power per unit area associated with the electromagnetic wave described in the problem introduction? Give your answers in terms of some or all variables E0, B0, k, x, w, t, and mu0. Specify the direction using the unit vectors I, j, and k.