Physics

Problem

A research vessel sends a sound pulse into the sea and receives the echo after

1.20\,\text{s}

. Take the speed of sound in seawater as

1500\,\text{m/s}

. Calculate the depth of the reflecting surface below the vessel. a)

450\,\text{m}

206\,\text{m}

900\,\text{m}

1800\,\text{m}