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Answer to Question #293802 in Physics for elham faiez

Question #293802

Mattias stands in front of a cliff. He shouts "Hello". After 0.4 s here he echoes.

 How far from the cliff is Mattias? Round to ten meters.


1
Expert's answer
2022-02-04T07:41:00-0500

Assume that the speed of sound is 340 m/s. The distance between the cliff and Mattias is


"d=v\u00b7\\dfrac t2=340\u00b7\\dfrac{0.4}{2}=68\\text{ m}."


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