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EM PLANE WAVES 2. An EM plane wave is propogating along the x-axis with wave number k and angular frequency w. The Electric field is in the +y-direction with magnitude Eo cos(kx - wt). (a) Calculate the magnetic field vector (magnitude and direction) in terms of Eo, k, w. (b) What is the total EM-field energy contained within a cube of side lengths a? (c) Suppose that w is tuned to be in resonance with an LC circuit and that the circuit is able to absorb the amount of energy calculated in part (c). What will be the amplitude of charge oscillation for this LC circuit in terms of the constants given in the current