PHYS 1041 Lecture Notes - Lecture 5: Barometer, Net Force, Pressure Measurement
Document Summary
Pressure fluid: matter that flows under influence of external force comprised of both liquids and gases fluids are incompressible; density is constant gases are compressible; density is variable density: 2 r density of water: density of mercury: pressure: measure normal force per unit area exerted by a fluid. 2m the unit of n/m2 is a pascal (pa) O must increase to counteract that effect this is called hydrostatic equilibrium r+ hydrostatic equilibrium: p=pressure, po=pressure of liquid at surface. Pressure specific gravity: ratio of density of a substance to the density of water example: specific gravity of mercury: r r. 6. 13 gauge pressure: relative pressure difference between two spots absolute pressure: the total pressure, not in comparison to anything else. Va a build-up of plaque in an artery shrinks its area. Similar to a mini stroke, blood pressure drops in that area and cannot reach the brain as easily, limiting the oxygen reaching the brain.
