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A dish antenna with a diameter of 22.8 m receives (at normal incidence) a radio signal from a distant source, as shown in the figure below. The radio signal is a continuous sinusoidal wave with amplitude Emax = 0.40 µV/m. Assume the antenna absorbs all the radiation that falls on the dish.

(a) What is the amplitude of the magnetic field in this wave?

(b) What is the intensity of the radiation received by the antenna?

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