The Challenger Deep Has Previously Been Measured to Have a Depth

question 56

Multiple Choice

The Challenger Deep has previously been measured to have a depth of 10,994 meters.You have been sent to the part of the Pacific Ocean to verify this depth with an echo sounder.Assuming that Depth = 1/2 (1,500 m/sec*echo travel time) , approximately how many seconds should it take for the sound wave to leave your ship, strike the bottom of the Challenger Deep, and return if the depth is correct?

• A)10.5 seconds
• B)14.66 seconds
• C)17.39 seconds
• D)22.67 seconds

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