Question

A SONAR (sound navigation and ranging) uses ultrasonic waves to detect and locate object under water. In a submarine equaipped with as SONAR, the time delay between genration of a probe wave and the recption of its echo after refection from an enemy submarine is found to be 77.0 s. What is the distance of the enemy submarine ? (speed of sound in water `= 1450 ms^(-1)`

Answer 1

Here, `t = 77.0s, x = ? v = 1450 ms^(-1)`. As `x = (upsilonxxt)/(2) :. X =(1450xx77.0)/(2) m = 55825m`