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You are hiking to the top of a small canyon. When you stop for a rest you decide to shout “hello” across the canyon. You hear your echo 1.10 s after your shout. If sound waves travel at 340 m/s, how wide is the canyon?
At the speed of 340 m/s , sound travels (1.10 x 340) = 374 meters in 1.10 s .
That's the round-trip distance from my mouth to the other side of the canyon and back, so the other side of the canyon is 374/2 = 187 meters away. (about 614 feet)
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