A uniform plane wave of frequency 5 x 10 Hz propagating in a material medium has the following characteristics. (i) The fields are attenuated by the factor e- in a distance of 28.65 m. (ii) The fields undergo a change in phasc by 2r in a distance of 111.2 m. (ii) The ratio of the amplitudes of the electric- and magnetic-field intensities at a point in the medium is 59.4. (a) What is the value of y? (b) What is the value of 7? (c) Find o, 8, and u of the medium.