Wednesday 6/17 PHYS 2010 Nathalie Hoffmann University of Utah.

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Presentation transcript:

Wednesday 6/17 PHYS 2010 Nathalie Hoffmann University of Utah

Fluids Fluids can flow and take the shape of their container, because their molecules can move freely with respect to each other and are not tied to fixed locations. Liquids: maintain their volume, stronger attractive forces between molecules, incompressible fluids Gases: fill the volume available to them, weak attractive forces between molecules, compressible fluids

Density

Pressure

Fluid Depth In a fluid at rest, pressure increases with depth, e.g. ocean, atmosphere

Hydrostatic Equilibrium

Hydrostatic Equilibrium Equation

Equation of Continuity

Units SI: [Pa] = [N/m 2 ] (pascals) Others: [atm] (atmospheres) × 10 5 Pa [mmHg] (millimetres of mercury) [torr] Etc.

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