Two loudspeakers are placed on a wall 3.00 m apart. Alistenerstands 4.00 m from the walldirectly in front of one of thespeakers. A single oscillator isdriving the speakers at a frequencyof 700 Hz.
(a) What is the phase difference between the two waves whentheyreach the observer? (Your answer should be between 0and2Ï.) rad (b) What is the frequency closest to 700 Hz to which the oscillatormay beadjusted such that the observer hears minimal sound?
