Solids and Fluids

[Fivetoone215]

1. The problem statement, all variables and given/known data
In a sample of seawater taken from an oil spill, an oil layer 4.0 cm thich floats on 55 cm of water. If the density of the oil is 0.75 x 10^3 kg/m^3, what is the absolute pressure on the bottom of the container.

p= 0.75x10^3 kg/m^3
g = 9.8m/s^2
h=.55m
p=?
pa = density of seawater??

2. Relevant equations
p=pa+ pgh


3. The attempt at a solution

p = pa+ (0.75x10^3 kg/m^3)(9.8m/s^2)(.55m)

4 cm =??:confused:

[denverdoc]

sg of sea water about 1.025
you need to add all pressures, from p=density*g*h of the two columns plus ambient.