A submarine is fitted with a sonar (sound navigation and ranging) system which operates at an ultrasonic frequency of 42 khz. An enemy submarine is moving towards the sonar with a speed btrix medical classes: 2-k-17/18, vigyan nagar kota (rajasthan) contact no. : 0744-2430155/156/244/245, 9887842820/21, 7374096670/71 12 of 200 ms1. If the speed of sound in seawater is 1400 ms1 what is the frequency of sound received back at the sonar fitted submarine after reflection from the enemy submarine
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I think approx. 23 khz or near by .
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