Question

The "ears" of a frog are two circular membranes located behind the frog's eyes. In one species of frog each membrane is 0.500 cm in radius. If a source of sound has a power output of 2.50×10−6W , emits sound equally in all directions, and is located 1.50 m from the frog, how much sound energy arrives at one of the membranes each second?

Answer 1

Power output of the source of sound = P = 2.5 x 10-6 W Distance of the frog from the source of the sound = R =