A person stands at a point 358 m
in front of the face of a sheer cliff. If the person shouts, how much time will elapse before an echo is heard? (Assume the speed of sound is 344 m/s.)
"d = 358\\ m\\\\\nv = 344\\ m\/s"
"t=\\dfrac{2d }v = \\dfrac{2\u00d7 358}{344} = 2.08s"
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