Thread: BQ-Investment - BQ-Investment.com

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Added for discussion
zedzeco

6/19/2010 18:15 40006773 U2837357 (BQ-Investment) + $1.00
6/20/2010 19:55 40050657 U2837357 (BQ-Investment) + $1.00

6/21/2010 19:08 40100754 U2837357 (BQ-Investment) + $1.00

Suppose that the separation between two speakers A and B is 3.90 m and the speakers are vibrating in-phase. They are playing identical 148-Hz tones and the speed of sound is 343 m/s. An observer is seated at a position directly facing speaker B in such a way that his line of sight extending to B is perpendicular to the imaginary line between A and B. What is the largest possible distance between speaker B and the observer, such that he observes destructive interference?