gc textbook chapter 12 Sound (id: e2868b27c)

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

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A bat emits a series of high frequency sound pulses as/,h n0s.*q,hnswj zg yw6(mn o it ap jlqvsi:; za20proaches a moth. The0 jaz l2:svqi; pulses are approximately 70.0 ms apart, and each is about 3.0 ms long. How far away can the moth be detected by the bat so that the echo from one chirp returns before the next chirp is emitted?    m

参考答案: 11.5±2%


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