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Two speakers A and B are 5.00m apart and each is playing a 780Hz note in...

Two speakers A and B are 5.00m apart and each is playing a 780Hz note in phase with each other. On a line perpendicular to the speakers, you are standing 3.60 m in front of speaker A. You start walking on the perpendicular line away from the speakers.[1] At what distance from speaker A do you first hear a maximum in the sound intensity.[2] At what distance from speaker A do you first hear a minimum in the sound intensity

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