1. Chapter 19
Liquids

2. Liquids exert pressure on the walls of their container.
Pressure = force
area

3. Pressure due to liquid = weight density x depth

4. Water pressure depends on depth, not volume:
“At any point within a liquid, the forces that produce pressure are exerted equally in all directions” - Hewitt:

5. Buoyancy
Buoyancy is the apparent loss of weight of objects when submerged in a liquid.
Buoyant force is the upward force exerted on a submerged object that is opposite in direction to gravity.

6. Displacement: the volume of liquid displaced by a submerged object is equal to the volume of the object.
A completely submerged object always displaces a volume of liquid equal to its own volume.

7. Archimedes Principle
“An immersed object is buoyed up by a force equal to the weight of of the fluid that it displaces”