“P1” stands for pressure energy (pressure in the fluid), “ρ” is the density, “v” is the velocity of the fluid, “g” stands for the acceleration due to gravity (9.8 or 10, whichever you prefer), and “h” equals the height of fluid off the ground (“Bernoulli’s Equation”). Let us do an example problem to help put this into perspective:
“Say that an amount water flows through an ‘s’ shaped pipe. At one end of the pipe, the water has a pressure of 160,000 Pascal (Pa), a velocity of 7.0 m/s, and has a height of 1.2 m. At the other end of the pipe, the velocity of the water increased to 11 m/s, and the height has raised to 4.0 m. The density of the water is 2000 kg/m^3” (Friedl). Now, all you have to do is the plug the information into the equation:
ρ = 2000 kg/m^3, g = 9.8 m/s^2, P1 = 160,000 Pa, v1 = 7.0 m/s, h1 = 1 m, v2 = 11 m/s,
h2 = 4.0 m, and P2 is…?…