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A submarine send out a pulse of ultrasound to check how close it is to the seabed the reflected waves are detected 0.2 seconds later work out the total distance travelled by the detected wave is the speed
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A submarine send out a pulse of ultrasound to check how close it is to the seabed the reflected waves are detected 0.2 seconds later work out the total distance travelled by the detected wave is the speed of ultrasound is in water is 1500 M/S

User Laban
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User RohanArihant
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300m

1500 m/s x 0.2 secs = 300m
User Seyi Aka Architect
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