Two identical loudspeakers facing each other are separated by 1m are excited in phase by a 1,360 Hz sine wave. Where will be the points on a line between the speakers where there will be (a) perfect constructive interference, (b) perfect destructive interference? Assume the speed of sound to be 340m/s. Make sure to provide a clear sketch and derive a general formula before you answer points (a) and (b).
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