Physics, 03.12.2019 18:31, theoretical0315

The drawing shows a loudspeaker a and point c, where a listener is positioned. a second loudspeaker b is located somewhere to the right of loudspeaker a. both speakers vibrate in phase and are playing a 67.6-hz tone. the speed of sound is 343 m/s. what is the closest to speaker a that speaker b can be located, so that the listener hears no sound? (assume |ac| = 4.00 m.)

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The drawing shows a loudspeaker a and point c, where a listener is positioned. a second loudspeaker...