Two loudspeakers, A and B are driven by the same amplifier and emit sinusoidal waves in phase. The frequency of the waves emitted by each speaker is 694 hz. You are standing between the speakers, along the line connecting them and are at a point of constructive interference. How far must you walk toward speaker B to reach the first point of destructive interference?
The Attempt at a Solution
I don't really know how to approach this, besides obviously solving for wavelength, .494 m . After this, i tried drawing pictures to relate things but didn't really know what I was doing. All I know is that constructive interference occurs in whole number integers of wavelength or something like that and destructive in n+ 1/2