Answer to Question #190707 in Physics for enyewowwow

Question

A submarine trying to detect an enemy destroyer notes that a sonar signal sent through the water returns 0.40 seconds after it was sent. The frequency of the sonar used by the submarine is 20 kilo-hertz. The speed of sound in sea water is 1.56 x 10³ meters per second. 

e. How far away is the destroyer? 

f. The sonar computers receive a reflection from the destroyer at a frequency of 19 kilo-hertz. What useful information about the motion of the destroyer does this mean the computer can report? 

Answer 1

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