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What is the relationship between distance and sound wave return time?
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What is the relationship between distance and sound wave return time?

User BenNov
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The time for the echo to return is directly proportional to the distance. vw = fλ. In a given medium under fixed conditions, vw is constant, so that there is a relationship between f and λ; the higher the frequency, the smaller the wavelength.
User Rupinder
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