Asked by Faoruk
                A hiker in a canyon calls out “Hello” and hears his echo 2 s later.  How far away are the canyon walls?
            
            
        Answers
                    Answered by
            bobpursley
            
    how far can sound travel in 1 second?
    
                    Answered by
            Henry
            
    d = V*t/2.
V = 330 m/s.
    
V = 330 m/s.
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