You **** 5 m down in the ocean. What is the absolute pressure there ?
The density of water is
∆P = ρgH
= 997 kg/m3 × 9.81 m/s2 × 5 m
= 48903 Pa = 48.903 kPa
Pocean= P0 + ∆P
= 101.325 + 48.903
= 150 kPa
