Indicate if each of the field descriptions E and B correspond to an electromagnetic wave propagating in space (Empty) a space diagram (x, y, z) can be useful. If the description does not correspond to a propagating wave, indicate why; give a brief description.

[ Em and Bm are positive scalar values that meet the wave constraint, k is the wave number, w(omega) is the angular frequency, f: frequency, and T is the period ]

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