In order to find the depth of the sea, a ship sends out a sound wave and receives an echo after one second. If the velocity of sound in water is 1500ms-1, what is the depth of the sea?
-
A.
0.75km -
B.
1.50km -
C.
2.20km -
D.
3.00km -
E.
3.75km
Correct Answer: Option A
Explanation
Echo time = 1 (div) 2 = 0.5sec
depth = velocity x time
= 1500 x 0.5
= 750m = 0.75km