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A giant sea monster chases a deep sea submarine near the bottom of the North...

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A giant sea monster chases a deep sea submarine near the bottom of the North Atlantic. The submarine is moving at 30 m/s. The sea monster sends out a sonar signal (sound) of frequency 1000 Hz. The signal received by the sub has a frequency of 985 Hz. The speed of sound in saltwater is 1530 m/s. a. Determine the speed of the sea monster b. and if the sub is in trouble (yes or no).

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