Physics Unit12: Sound (id: 78c0781a0)

本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理

[单选题]
The wavelengths of the sounds prodhz- :nxn1 qrg p t;:*ra)eqs7iuced a3j ra(ovn6bi3: af u,by two horns are 6 m and 7 m respectively. What beat frequency is heard when the horns are sounded on a day when the velocity of sound is 340 m/s?bn i(3oarf :uvaj,6a3

A. $5Hz$
B. $6Hz$
C. $7Hz$
D. $8Hz$


参考答案:  D


本题详细解析: 暂无

微信扫一扫，分享更方便