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Statement of a problem № 3536

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A rifle shot is fired in a valley formed between two parallel mountains. The echo from one mountain is heard 2 s after the first one. (a) What is the width of the valley? (b) Is it possible to hear the subsequent echoes from the two mountains simul- taneously, at the same point? If so, after what time, given sound velocity = 360 m/s.

Solution:
A rifle shot is fired in a valley formed between two parallel mountains. The ech

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