A bat flying in a cave emits a sound and receives its echo 0.1 s later.
How far away is the cave wall? Assume the speed of sound to be 340 m/s.
Answer in units of m. How do you do this?

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  1. nvm i got 17

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  2. d = r*t = 340 * (0.1/2) = 17 m.

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