Question: A sinusoidal electromagnetic wave emitted by a cellular phone has a wavelength of 35A cm and an electric-field amplitude of 5.40 x 10-2 V/m at

A sinusoidal electromagnetic wave emitted by a cellular phone has a wavelength of 35A cm and an electric-field amplitude of 5.40 x 10-2 V/m at a distance of 250 m from the antenna. Calculate
(a) The frequency of the wave;
(b) The magnetic-field amplitude;
(c) The intensity of the wave.

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