Question

A sound pulse emitted underwater reflects off a school of fish and is detected at the same place 0.15 s later (see the figure below). How far away are the fish?

Answer 1

The distance to the object creating the echo is 1740 meters.

Step-by-step explanation:

To determine the distance to the object creating the echo, we can use the equation:

Distance = Speed of sound x Time

Given that the echo returns to the submarine 1.20 s after being emitted, we can substitute the values into the equation:

Distance = (Speed of sound) x (1.20 s)

Since the speed of sound in water is approximately 1450 m/s, we can calculate:

Distance = (1450 m/s) x (1.20 s) = 1740 meters

Therefore, the distance to the object creating the echo is 1740 meters.