I just want to check if I did this question correctly because I'm not really sure if I did. The speed of water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the surface, and 1.80s later the reflected signal is detected. How deep is the ocean beneath the ship? First I found the frequency by uing the equation: f= 1/T which is 1/1.80s=.5555555556 Hz then I used the equation vel=frequency X wavelength and rearrange it to vel/frequency= wavelength which is (1498m/s)/(.5555555556Hz) and I got 2696.4 m Is this right?