>> A jackhammer, operated continuously at a construction site, behaves as a point source of spherical sound waves. A construction supervisor stands 52.0 m due north of this sound source and begins to walk due west. How far does she have to walk in order for the amplitude of the wave function to drop by a factor of 1.90? I'm not really sure how to set this problem up. The only thing I have so far is that 1/1.90 Amplitude1 = Amplitude2... _________________________________________________________________ >> A loudspeaker is placed between two observers who are 125 m apart, along the line connecting them. If one observer (observer A) records a sound level of 70 dB and the other (observer B) records a sound level of 100 dB, how far is the speaker from each observer? Again, I'm not sure how to start this. I'm fairly certain I have to use intensity levels, though.