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 frequency soso a hgof3a((eu a.(*gy.rn; 1c6t dgwund pulses u-mpu4t6i3vws; k+wy 2 i/twcas it approaches a moth. The pulses are approximately 70.0 ms apart, and each is about 3.0 ms long. How far away can the moth bvi +;k2/m4wti uys6u wt w3p-ce 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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