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A college student is at a concert and really wants to hear the music, so she sits between two in-phase loudspeakers, which point toward each other and are 60.8 m apart. The speakers emit sound at a frequency of 428.75 Hz. At the midpoint between the speakers, there will be constructive interference, and the music will be at its loudest. At what distance closest to the midpoint (and along the line connecting the loudspeakers) could she also sit to experience the loudest sound? (Use 343.0 m/s for the speed of sound.)

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