Question about sound interference;
Three identical loudspeakers, spaced with 3.0 meters among adjacent speakers, play a 170Hz tone in a room where the speed of sound is 340m/s. You are standing 4.0 m in front of the middle speaker. At this point, the amplitude from each speaker individually is a.
1) How far back would the middle speaker be moved to produce maximum net sound amplitude?
2) When the sound amplitude is maximum, with what factor is the sound intensity greater than the sound intensity of a single speaker?