Sound waves can be used to map the sea floor by timing how long it takes the echo to reach the surface of the water. A certain mapping ship uses 600 kHz ultrasound. (Look in book for the speed of sound in water.)
A. What is the wavelength of the sound in the air and in the water? (The speed of sound can be found in the book.)
B. Sketch the ship sending out a pulse, the pulse bouncing off the sea floor, and returning to the ship.
C. If the echo reaches the detector 0.57 s after the pulse is emitted, how far below the ship is the sea floor?
D. How long would it take the echo to reach the ship if it bounced off the top of a formation that is 7.5 m higher than the sea floor?