Question: A wave traveling in a nonmagnetic medium with r = 9 is characterized by an electric field given by Determine the direction of wave travel

A wave traveling in a nonmagnetic medium with r = 9 is characterized by an electric field given by

($ 3 cos(T x 10'r + kx)- 22cos(n x 10'r+kx)] (V/m).
Determine the direction of wave travel and the average power density carried by the wave.

($ 3 cos(T x 10'r + kx)- 22cos(n x 10'r+kx)] (V/m).

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