The electromagnetic wave that delivers a cellular phone
Chapter , Problem 56(choose chapter or problem)
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic fi eld with an rms value of 1.5 3 10210 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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