Physics, 18.03.2021 03:10 913003853

A man screams in a long canyon and waits for the echo to come back to him. It takes 2.91 seconds for him to hear the echo of his yell. The sound has to travel down the canyon and back to reach his ears. How long is the canyon?

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A man screams in a long canyon and waits for the echo to come back to him. It takes 2.91 seconds for...