If a sailing ship moves in a straight line with speed 6m/s ,it sends a sound pulse in water and?
... received it back after 6s,if the speed of sound in water is 1500m/s ,what is the depth of water where the pulse is sent or:... received it back
... received it back after 6s,if the speed of sound in water is 1500m/s ,what is the depth of water where the pulse is sent
or:... received it back after 6s,if the speed of sound in water is 1500m/s ,what is the depth of water where the pulse is sent
