An elliptically polarized right-handed plane wave with a frequency of 1 GHz travels in the positive z-direction through a vacuum. (a) Given that, at any constant z plane, the ratio between the highest and lowest electric field intensity values is 3, and the highest electric field intensity is 1[V/m], determine the wave's time-averaged Poynting vector (the average power flow density). (b) When this plane wave is reflected by a surface into a homogeneous, isotropic, non-magnetic medium (with Ho) characterized by permittivity &, calculate the incidence angle at which the reflected plane wave will be linearly polarized, expressing your answer in terms of .