Question

a sonar station picks up a return signal after 3seconds. how far away is the object?(speed of sound in water=1440m/s)

Answer 1

Answer on Question #38207, Physics, Other

Question:

A sonar station picks up a return signal after 3 seconds. How far away is the object? (speed of sound in water=1440m/s)

Answer:

Delay time equals:

$$t = \frac {2 L}{v}$$

Where $L$ is distance to object, $v$ is speed of sound in water.

Therefore:

$$L = \frac {v t}{2} = \frac {1 4 4 0 * 3}{2} = 2 1 6 0 \frac {m}{s}$$

Answer: $2160\frac{m}{s}$