(2) Wave Polarizations: The electric field intensity vectors of two linearly polarized electromagnetic waves trav- elling in unison through free-space are given by E, = e-im(z-0.5) * V/m and E, = ae-ix(z+0.25b) y V/m (z in m), respectively, where a and b are constants. Determine the complex magnetic field intensity vector, instantaneous electric and magnetic field vectors, and polarization state of the resultant wave in the following cases: a) a = 1 and b = 1, b) a = -1 and b = 1; c) a = -1 and b = 3; d) a = 3 and b = 1; e) a = -3 and b = 1 and f) a = 3 and b = -1. What can you say about the handedness of the way in each case? Ans: CP (circular Polarization), CP, LP (Linear Polarization), EP (Elliptical Polarization), EP, LP. (3) Power: A 100 MHz plane wave is normally incident from air to the sea surface, which may be assumed to be calm and smooth. If o = 4 S/m, / = 1, and e = 81 for seawater, calculate the fractions of the incident power that are transmitted and reflected. Ans: P. = 89.51% and P. = 10.84%