How many seconds would it take an echo sounder's ping to make the trip from a ship to the Challenger Deep (10,994 meters) and back? Recall that depth = 1/2 (1500 m/sec × Echo travel time).
A) 10.5 seconds
B) 14.66 seconds
C) 17.39 seconds
D) 22.67 seconds
Answer: B) 14.66 seconds
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A. topographic profile. B. outcrop. C. geologic map.
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