A patient is receiving medication through an intravenous infusion, as the figure shows. The medication has a viscosity of 2.2 × 10-³ N-s/m² and a density of 1050 kg/m³. The needle being used has a length of 0.035 m, an inner radius of 5.0 × 10-4 m, and has been inserted into a vein, which has a gauge pressure of 2.0 × 10³ Pa. The IV bag hangs 0.45 m above the location of the needle. What volume of medication enters the vein in 10.0 minutes? Give your answer in cm³. Assume the height of the column of medication in the IV bag and connecting tube remains constant during the 10.0 minutes. Number i Atmospheric pressure Units ↑ 0.45 m ()
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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