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OpenStudy (karabella98):
A hiker in the middle of a canyon yells “Echo!” and then 4 s later hears his echo off of the walls of the canyon. How far away are the walls of the canyon?
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OpenStudy (caominhim):
sound travels at 343 m/s
OpenStudy (karabella98):
So what formula do I use?
OpenStudy (caominhim):
v = x/t it takes 2 seconds to get to the end of the canyon and 2 seconds to get back
OpenStudy (karabella98):
So is 686m right?
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