Overview
Howler monkeys vocalize throughout the day in order to es- tablish territorial boundaries with neighboring troops. One monkey stands r1 = 0.50 m away from a howling friend, and he measures the sound level to be β1 = 130 dB. He then moves to a new distance r2 where the sound level resembles that of a bird call (β2 = 50 dB) What is the new distance r2? (Ignore any damping/reflection of the sound wave for this problem.) For the limit check, investigate what happens to r2 if the de- sired sound level grows extremely large (β2 →∞).