Question text
31 A ship that is stationary on the surface of the sea sends pulses of sound vertically downwards towards the sea bed. Each pulse that reflects from the sea bed is received 1.0s after it is sent out. A whale swims under the boat and a pulse is received 0.60s after it is sent out. The speed of sound in sea water is 1500m/s. What is the distance of the whale above the sea bed? A 300m B 450m C 600m D 750m
31 A ship that is stationary on the surface of the sea sends pulses of sound vertically downwards
towards the sea bed.
Each pulse that reflects from the sea bed is received 1.0s after it is sent out.
A whale swims under the boat and a pulse is received 0.60s after it is sent out.
The speed of sound in sea water is 1500m/s.
What is the distance of the whale above the sea bed?
A 300m B 450m C 600m D 750m
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