Physics Unit12: Sound (id: 41966e554)

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]
You are moving at 12jzi)k u4y+ld(g kta,m ;k 6.pj0zr ie732;uvfzuyj+(l km/h toward a stationary train. The train blows its 400-Hz whistle2+i;j vuluy 3( 7rzezf. 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:  B


本题详细解析: 暂无

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