A person swims from a depth of 0.50 m to a depth of 1.70 m below the surface of the sea. density of the sea water = 1030 kg/m^3 gravitational field strength = 9.8 N/kg Calculate the increase in pressure on the swimmer. Give the Unit.
ΔP = Δh ρ g
Δh = 1.7 - 0.5 = 1.2 m ρ = 1030 kg/m3g = 9.8 N/kg
ΔP = 1.2 (m) x 1030 (kg/m3) x 9.8 (N/kg)
= 12,112.8 N/m2 = 12,112.8 Pa
EP
Related Physics A Level answers
All answers ▸A ball is dropped from a 5.0m high window. Assuming air resistance is negligible, calculate the time taken for it to hit the ground.
State what is meant by resonance and provide some examples where it is crucial.
The braking distance of a road train travelling at 15m/s is 70m. Assuming that the same braking force is applied at all speeds, show that the braking distance of a road train when travelling at 25m/s is about 190m.
Describe how the strong nuclear force between nucleons varies with seperation of the nucleons.