Two small speakers, 0.650 m apart, are facing in the same direction. They are driven by one 677 Hz oscillator and therefore emit identical sound waves in phase with one another at the respective points of origin. (The speed of sound waves in air is 343 m/s.) (A) An observer wishes to stand in front of one of the speakers, at the closest point (i. e., smallest x-value) where intensity is at a relative maximum. At what distance x from the nearest speaker should she position herself? (Enter your answer in m.)
(B) The observer now wishes to stand at the closest point along that line where intensity is at a relative minimum. At what distance x should she position herself now? (Enter your answer in m.)