gc textbook chapter 12 Sound (id: 1f29027b2)

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 wall at a speed - .eq sk*9ga)o 6cxscfof 5 m/s Ayo33j2 tfr)kss it flies, the bat emits an ultrasonic sound wave with frequency 30.0 kHz. What frequency does thors)t32 3ykj fe bat hear in the reflected wave?    $ \times10^{4}$ Hz

参考答案: 3,09±2%


本题详细解析:

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