1. Heat and Sound Fluids 1 Pressure Specific Gravity Static Equilibrium Buoyancy

2. Heat and Sound Fluids 2 Pressure is force per unit area. Density and mass per unit volume. D fluid h A Pressure is the same at any point regardless of direction. It is NOT a vector! It only depends on the depth h.

3. Heat and Sound Fluids 3 Siphoning is the act of withdrawing air from a pipe or tube and allowing a liquid to fill in the vacuum Torricelli found that the amount of water that could be drawn upward in this way was limited to 33 feet. He also found that for mercury the height was about 2.56 feet. The ratio of these two numbers is 33/2.56 = 12.9 which is the specific gravity of mercury. Therefore, the height depends on density. 33 ft 2.56 ft

4. Heat and Sound Fluids 4 F1F1 A1A1 P A2A2 F2F2 The pressure in a pipe is the same at all points. NOT THE FORCE!

5. Heat and Sound Fluids 5 D fluid h top A h bottom