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04-11-2008, 06:00 AM
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| A sonar unit on a submarine sends out a pulse of sound into seawater. The... ...pulse returns 1.14 s later.? A sonar unit on a submarine sends out a pulse of sound into seawater. The pulse returns 1.14 s later. What is the distance to the object that reflects the pulse back to the submarine?      |
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04-11-2008, 06:05 AM
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| speed of sound in sea water = 1531 m/s so the pulse travels 1531 m/s x 1.14s = 1745m distance is half that or 873m |
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