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Geography, 31.01.2020 09:56 daniecott

An oceanic vessel surveys the ocean floor using ultrasonic waves. the ocean beneath the boat is 4600 meters deep. if the ultrasonic wave travels to the bottom of the ocean and back to the boat in 6 seconds, what is its average speed?

a) 770 m/s
b) 1530 m/s
c) 7700 m/s
d) 27600 m/s

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