Sonar is a system similar to radar except that sound is used in place of radio waves. Sonar systems
are generally operated under water, where the speed of sound is approximately 1500 m/s. Suppose you are on a ship monitoring the distance to a submarine using sonar, and you find that
the sonar reflections return in 24 s. How far away is the submarine?
We can find the distance to the submarine, from the formula:
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