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The drawing shows a loudspeaker A and point C, where a listeer is positioned. A second loudspeaker B is located somewhere to the
right of A. Both speakers vibrate in phase and are playing a 82.1-Hz tone. The speed of sound is 345 m/s. What is the closest to speaker
A that speaker B can be located, so that the listener hears no sound?
Number
Units
1.00 m-
A
60.0°
B

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