問題詳情
31. Two stationary tuning forks (350 and 352 Hz) are struck simultaneously. The resulting sound is observed to:
(A) beat with a frequency of 2 beats/s
(B) beat with a frequency of 351 beats/s
(C) be loud but not beat
(D) be Doppler shifted by 2 Hz
(E) have a frequency of 702 Hz
參考答案