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A pair of speakers separated by distance d = 0.640 m are driven by the same...

A pair of speakers separated by distance d = 0.640 m are driven by the same oscillator at a frequency of 681 Hz. An observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers as in the figure below. (Use v = 343 m/s.) Two speakers are side by side, with one speaker on the left and one on the right. The speakers are separated by a distance d and emit sound waves in the same direction. A man stands directly in front of the speaker on the right but a distance x away from the speaker. (a) How far must the observer walk before reaching a relative maximum in intensity? m (b) How far will the observer be from the speaker when the first relative minimum is detected in the intensity? m

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