5.6 Questions

Note: ρfresh water = 1,000kg/m3; g = 10N/kg

Q5) ∆Pressure = height x density x gravitational field strength
250,000 - 100,000 = h x 1,000 x 10
h = 15m

If he were diving in sea water that is slightly denser than fresh water, the height would increase.

Q6) ∆Pressure = height x density x gravitational field strength
∆Pressure = 50 x 420 x 1.4
∆Pressure = 29.4kPa

1600 mbar = 160 kPa
160+29.4 = 189 (189.4) kPa