Physics, 14.04.2020 22:34 puffley

A traveling electromagnetic wave in a vacuum has an electric field amplitude of 57.9 V/m. Calculate the intensity S of this wave. Then, determine the amount of energy U that flows through area of 0.0223 m 2 over an interval of 18.5 s, assuming that the area is perpendicular to the direction of wave propagation.

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