Multiple Choice
A source emits sound with a frequency of 1000 Hz. It is moving at 20 m/s toward a stationary reflecting wall. If the speed of sound is 340 m/s an observer at rest directly behind the source hears a beat frequency of:
A) 11 Hz
B) 86 Hz
C) 97 Hz
D) 118 Hz
E) 183 Hz
Correct Answer:
Verified
Correct Answer:
Verified
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