問題詳情
30. A tube open at one end and closed at the other end produces sound having a fundamental frequencyof 350 Hz. If you now open the closed end, the fundamental frequency becomes
(A) 87.5 Hz.
(B) 175 Hz.
(C) 350 Hz.
(D) 700 Hz.
(E) 1400 Hz.
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增