11.5 A 10-kHz electromagnetic wave in air with parallel polarization is incident obliquely on an ocean surface at a near-grazing angle of 88-degrees ( 0;). Using & =81, ir=1, 6 =4 S/m for seawater, find (a) the angle of refraction in the \"lossy\" seawater, (b) the transmission coefficient, and (c) the distance below the ocean surface where the field intensity has been diminished by 30 dB. (d) If the incident amplitude Eix = 10 V/m, write the time domain expression for Ei(r,t). (e) What is the transmitted H (7,t) field in the water