gc textbook chapter 12 Sound (id: 9bc8708c8)

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 at rest sends out ultrasueko d.)qui(uc7gt66 onic sound waves at 50.0 kHz and receiv gn:;v0qq+iaq/ drrz 8es them returned from an object moving directly away from it at 25 m/s What is thez a 8vqgr;n0 qd/+:qri received sound frequency?    $ \times10^{ 4}$ Hz

参考答案: 4.32±2%


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