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 , dm.j4,yqhnu/ (pr)wqf(uv na speed of 5 m/s As it flies, the bat emits an ush na2fxp u7,/ltrasonic sound wave with frequency 30.0 kHz. What frequens,/72h fp axuncy does the 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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