Blood flows through a pipe, passing from the wide section with cross-sectional area A1, as shown below, into the narrow section, with cross-sectional area A2. If the speed of the water in the wide section, V1, is 2.09 m/s, and the pressure in the narrow part, P2, is 4.10 X 104 Pascals, find (a) the speed of the blood in the narrow section v2; (b) the pressure of the blood in the wide section, P1 (Density of blood = p = 1020 kg/m³ ) 2 A2= 0.237 m P, = 4.1 X 10° Pascalse 4.1 X 10* Pascals- 5.00 m V1 = 2.09 m/s P1= ? A, = 0.415 m2 %3D Young's modulus F AL =Y A L. Density: M (kg /m³) p=. V F P = A P = P, + pgh Pressure: (Ра) Buoyancy Force, B = weight in air – weight in fluid Area of a circle = A = Tr² weight = mg, where g = 9.80 m/s? Pressure: F P= (Ра) A In liquid: P= P,+pgh Buoyancy Force, B = weight in air – weight in fluid Area of a circle = A = Tr? Buoyancy force on a submerged object: B Pfluid Vokiect g Fluid flow: Flow rate Q(m³/s) VA VIA1 = V2A2 Bernoulli's Principle: P1 + pghi + ½ pvi? = P2+ pgh2 + ½ p vz?
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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