Two sources of sinusoidal electromagnetic waves have average powers of P1 = 100.0 W and P2 = 320 W and emit uniformly in all directions. For the electromagnetic wave with P 1 = 100.0 W find the ratio of intensity S1 10 m away from the source to the intensity S 1 100m away from the source, i.e. S1 (10m)/S1(100m) (Hint: Area of sphere 4πR2)
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