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

[填空题]
A bat emits a series of high s:i(,xa v: g.cc1oy+ jn qo +a:ovw5syfrequency sound pulses as it approa 73piwpzyeuh+jl)c7ph4m3 (a:c p g6x ches a moth. The pulses are amcpap64h7xig p l7p3u jw+ey z)h3 :(cpproximately 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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