In the figure below all fluids are at 20 degree C Determine

In the figure below all fluids are at 20 degree C. Determine the pressure difference between points A and B. Given: rho_water = 1,000kg/m^3, SG_kerosine = 0.804, SG_benzene = 0.881, SG_Hg = 1.36 and gamma_air = 12N/m^3.

Solution

P_B-P_{A =} 1360*9.81*.08+804*9.81*.32+12*.09- 881*9.81*0.2-1000*9.81*0.4

= 2060 N/m²