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A traveling electromagnetic wave in a vacuum has an electric field amplitude of 68.3 V/m ....

A traveling electromagnetic wave in a vacuum has an electric field amplitude of 68.3 V/m . Calculate the intensity ? of this wave. Then, determine the amount of energy ? that flows through area of 0.0269 m2 over an interval of 18.1 s , assuming that the area is perpendicular to the direction of wave propagation.

S= W/m^2

U= J

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