Consider a circularly polarized electromagnetic plane wave propagating in vacuum in the z direction. Its electric field is given by Ē = EoRe(x+iy/√2. e^i(kz-ωt) where x and y are unit vectors and Eo, is a constant. Required:a. Write the x- and y-components of the electric field and show that it is indeed circularly polarized electromagnetic wave. b. Compute the Poynting vector and demonstrate that, unlike for the case of a linearly polarized plane wave it is independent of space and time. c. Calculate the energy density of this electromagnetic wave.