Question: The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.5 10-10 T.

The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.5 × 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through the window during a 45-s phone call?

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