1Measuring Blood Pressure• Blood pressure is measured with a special type of manometer called a sphygmomano-meter• Pressure is measured in mm of mercurySystolic > diastolicSamuel Siegfried Karl von BaschThe word comes from the Greeksphygmós(pulse),plus the scientific term manometer(pressure meter) Buoyant Force• The magnitude of the buoyant force always equals the weight of the displaced fluid• The buoyant force is the same for a totally submergedobject of a given volume, regardless of its shape or density--i.e. its weightfluidfluidfluidBVgwρ==•Buoyant force is up-against gravity•Mass of object determines if net forceis up or down•Since fluid density depends on depth,objects float at different heightsEquation of Continuity•A1v1= A2v2• The product of the cross-sectional area of a pipe and the fluid speed is a constant– Speed is high where the pipe is narrow and speed is low where the pipe has a large diameter• Av is called the flow rateStreamlines
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