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2. A uniform plane wave is propagating in a lossless non-magnetic dielectric medium along the
positive z direction. The time-domain form of the electric field is given by:
E(z, t) = 377 cos(wt – z +)u, [V/m]
3
Time time-average power density of the emitted wave is 377 W/m². Find n, &, and frequency of
the wave.

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