Physics, 03.01.2020 00:31, leeleelynn

An electromagnetic wave has an electric field given by
e? (y, t)=[3.90×105v/mcos(ky−(1.200×1013ra d/s)t)]k^
in which direction is the wave traveling? what is the wavelength of the wave?

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An electromagnetic wave has an electric field given by
e? (y, t)=[3.90×105v/mcos(ky−(1.200×10...