Fourth year of secondary education
Pressure (I)
E. Vallo - J.Villasuso
 Pressure
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Communicating vessels: immiscible liquids 3 / 3

What happens if in each branch we have immiscible liquids of different densities like water and oil? 

We have liquid A with density dA and liquid B with density dB.
In the visual we fix density dA, but the density of liquid B can be varied.
For the density at point O to be the same as the density at point R, the heights of the liquid in the two branches must be different:



If liquid B is more dense than liquid A, height hB should be less than height hA and in a proportion determined by the densities.

 

What is pressure? How does it work?
Units
Hydrostatic pressure
Mathematical expression
The pressure increases the deeper you go in liquids
Which goes the furthest?
A little goes a long way!
Communicating vessels
Syphons
Pascal's Law
The Law
The hydraulic press
Hydraulic brakes: drum brakes
Manometers
Problems
Evaluation