The sound from a single source can reach point O by two different paths. One path has a length 20.0 m and the second path has a length 21.0 m. The sound destructively interferes at point O
What is the minimum frequency of the source if the speed of sound is 340 m/s? A)
340 Hz
B)
6800 Hz
C)
520 Hz
D)
680 Hz
E)
170 Hz
E
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