1. The problem statement, all variables and given/known data Two loudspeakers emit sound waves along the x axis. A listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x= .50 m. If speaker 1 is slowly moved forward, the sound intensity decreases and then increases, reaching another maximum when speaker 1 is at x= .90 m. a) What is the frequency of the sound? Assume the speed of sound is 340 m/s. b) What is the phase difference between the speakers? 2. Relevant equations 3. The attempt at a solution a) The wavelength is .40 m, v=frequency*lambda 340= frequency * (.40) frequency=850 Hz For part b, do I assume that when the speakers are .50 m apart, that is the first maximum? (meaning the phase difference is 2pi) If so then 2pi= 2pi(.50)/(.40) + initial delta phi the intial phase difference is then -pi/2, which is the correct answer. I just was wondering if I can make the assumption that I did.