# science

If you shout into the Grand Canyon,your voice travels at the speed of sound(340 m/s) to the bottom of the canyon and back,and you hear and echo.How deep is the canyon at a spot where you can hear your echo 5.2 seconds after you shout.

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1. if depth is d, signal goes 2 d (down and up)
2 d = 340 t = 340 * 5.2
d = 170 * 5.2 meters

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Damon
2. thank you!!

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3. You are welcome.

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Damon
4. Does really work

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