Physics

Problem

An ultrasonic pulse sent straight down into the sea is received back after

4.0\,\text{s}

. Take the speed of sound in seawater as

1500\,\text{m s}^{-1}

. Calculate the depth of the sea at that point. a)

3750\,\text{m}

3000\,\text{m}

1500\,\text{m}

6000\,\text{m}