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17 August, 15:51

A plane electromagnetic wave with wavelength 3.0 m, travels in free space in the+xdirection with its electric field vector~E, of amplitude 300 V/m, directed along they-axis. (a) What is the frequencyfof the wave?

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  1. 17 August, 18:39
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    f = 1 10⁸ Hz

    Explanation:

    The speed of an electromagnetic wave is given by

    c = Lam f

    In our case, the wavelength is 3.0 m, so we can clear the frequency

    f = c / Lam

    f = 3 108/3.

    f = 1 10⁸ Hz
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