A sound pulse released from an echo sounder returns to the ship in 6.8 seconds. Assuming the speed of sound in ocean water is 4800 ft/sec, how many feet deep is the ocean at this location?

a. 16,320

b. There is not enough information to tell

c. 353

d. 706

e. 32,640

Answer:A) 16,320ft

Explanation:

Echo is defined as the reflection of sound waves when it hits a hard surface, in this case the bottom of the ocean. it represents the second sound you hear when you shout or utter a sound in a new empty house or on a silent night.

It is used in determining the depth of the sea or ocean using the formula, V=2x/t

Where V=velocity of sound=4800ft/s

and t=time taken from ship to bottom of the sea and back=6.8s.

X=V*2x=4800*6.8=16,320ft is the ocean depth