gc textbook chapter 12 Sound (id: ff0483c4b)

本题目来源于试卷: gc textbook chapter 12 Sound，类别为 通用国际物理

[填空题]
A bat flies toward a , +wvf9bku k9p ynz+ duve+o6s.oorxk 3 7l8z6moth at speed 6.5 m/s while the moth is flying toward the bat at spdeoks+v 3nx +.yz z7ourl o668eed 5 m/s The bat emits a sound wave of 51.35 kHz. What is the frequency of the wave detected by the bat after that wave reflects off the moth?    kHz

参考答案: 54.9±2%


本题详细解析:

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