# science

A bat flying in a cave emits a sound and
receives its echo 0.4 s later.
How far away is the cave wall? Assume the
speed of sound to be 340 m/s.
Answer in units of m.

1. 👍 0
2. 👎 0
3. 👁 131
1. Distance * 2 (for the return)
= speed * time
= 340 m/s * 0.4 s.
Solve for distance.

1. 👍 0
2. 👎 0

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