Physics Unit12: Sound (id: 5b64147d2)

本题目来源于试卷: Physics Unit12: Sound，类别为 国际高中通用物理

[单选题]
A train is traveling away from you at 120 km/h. onq jc/yg(0n3 -2tlx3ordtry70t-9g t msfd 1The train blows its 400-Hz whistle.m9f 0tlyx-1do-tt gdr 2rs7 3t Take the speed of sound to be 340 m/s. What frequency do you hear?

A. $444 \; Hz$
B. $439 \; Hz$
C. $364 \; Hz$
D. $361 \; Hz$


参考答案:  C


本题详细解析: 暂无

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