A plane wave in air with ⃗E i (x, z) = 20e −j(3x+4z) ⃗ey V/m s incident upon the planar surface of a dielectric material, with εr = 4, occupying the half-space z > 0. Determine
(a) the polarization of the incident wave,
(b) the angle of incidence,
(c) the time-domain expressions for the reflected electric and magnetic fields,
(d) the time-domain expressions for the transmitted electric and magnetic fields,
(e) the average power density carried by the wave in the dielectric medium.
