Question: what is rho g h?
Answer: Non Si Units for pressureEdit Hydrostatic pressure is the pressure due to the weight of a fluid. p = ρ g h {\displaystyle p=\rho gh\,} where: ρ (rho) is the density of the fluid (i.e., the practical density of fresh water is 1000 kg/m3); g is the acceleration due to gravity (approximately 9.81 m/s2 on earth's surface);