Question

Example 2 A SONAR transmits an ultrasonic sound signal
towards the bottom of a sea. The time interval between the
transmitting and the receiving of sound waves is 1.6 seconds.
If the speed of ultrasonic sound in seawater is 1560 m/s, find the
depth of the sea.​

Answer 1

Answer:

d= 1120m

Explanation:

Let, the Depth of sea is x, 

Distance traveled by sound wave=2d,

 Time is taken by sound to travel both ways=1.6s, 

Speed of the sound =time takentotal distance travelled=1400m/s=1.6s2d

d=1120m

Answer 2

Time taken by sound to reach the seabed = 1.6 s

Speed of sound in seawater = 1560 m/s

Distance travelled by the sound signal Speed x Time

= 1560 m/s x 1.6 s = 2496 m

Depth of the sea =

2496 m ÷2 = 1248 m

So, the depth of the sea is 1248 m.