Solids and Fluids pressure homework

AI Thread Summary
To calculate the absolute pressure at the bottom of a container with a 4 cm oil layer floating on 55 cm of seawater, the densities of both fluids must be considered. The density of the oil is 0.75 x 10^3 kg/m^3, and the specific gravity of seawater is approximately 1.025, leading to a density of about 1.025 x 10^3 kg/m^3. The pressure equation combines the pressure from the oil and seawater layers, calculated using p = pa + pgh. The total pressure includes contributions from both fluid columns and any ambient pressure. This approach ensures an accurate assessment of the absolute pressure at the bottom of the container.
Fivetoone215
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Homework Statement


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??

Homework Equations


p=pa+ pgh


The Attempt at a Solution



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

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