Question

A sonar navigation uses ultrasonic waves to detect and locate objects under water . In a submarine equiped with a sonar the time delay between generation of a probe wave and the reception of its echo after reflection from an enemy submarine is found to be 77s. What is the distance of the enemy submarine .(given ,speed of water = 1450 m/s)

Answer 1

Hii

Gdmrng☆☆

V=2d/s

1450=2×d/77

1450×77/2=d

725×77=d

55825m=d

Hope thse would helps u ❤❤✌

Answer 2

Hey 11th class mate!!!
Here is your answer....

Actually i had given this earlier too so that's why i gave a screenshot......