tx 10' The magnetic field of a plane-polarized electromagnetic wave moving in the z-direction is given by B = 1.2 x 10° sin 2 x 240 8 in SI units. Find the average power per square meter carried by the EM wave. а. 720 W b. 172 W с. 500 W d. 2 x 107 W e. 86 W
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