本题目来源于试卷: stationary wave in tube，类别为 美国物理杯赛(Physics Bowl)
[单选题]
14.21: A tuning fork placed oafv-7u2 j sn*over a 57 cm column of air closed only a-2su8 e1ry +kk js1pmdt its bottom end produces a standing wave in the 3rd harmonic. The speed of sound in air is 342 m/s. What is the-kjs1e2mk 1pyr sd8+u frequency of the tuning fork?
A. 150 Hz
B. 300 Hz
C. 450 Hz
D. 600 Hz
E. 900 Hz
参考答案: C
本题详细解析:
暂无
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