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?
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 = 1.5 m Sound intensity at the location of the frog = I The sound is equally distributed in all directions. P = (48R2)I 2.5x10-6 = 48(1.5)2I I = 8.842 x 10-8 W/m2 Radius of each membrane of the frog = r = 0.5 cm = 0.00 ... See the full answer