a 65cm tall graduated cylinder is filled with 30cm of glycerin (density 1260 kg/m^3) and 35 cm of water. find the pressure difference between the top and bottom of the cylinder.

Question

fretje · Answer

P = rho.g.h
(Pressure = density.g_gravitational acceleration.h_height)
here we can add the partial pressures
P = P1 + P2 = rho1.g.h1 + rho2.g.h2 = 30cm.1m/100cm.1260kg/m^3 . 9,81m/s^2 + 35cm.1m/100cm . 1000kg/m^3 . 9,81m/s^2 
= 7141,68 Pa ?