Compute the average arterial pressure in the legs of an erect person, 130 cm below the heart
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A: a. To calculate the speed of blood (v₂) in the aneurysm, we can use the principle of continuity,…
Q: Suppose you measure a standing person’s blood pressure by placing the cuff on his leg 0.500 m below…
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A: Given data: The weight of the person, Wp=670 N. The weight of the bike, Wb=85 N. The gauge pressure…
Q: The construction of a water pistol is shown in the figure below. The cylinder with cross-sectional…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…
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Q: (a) A man weighing 766 N lies on a bed of nails. Find the average pressure exerted by a nail on his…
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Q: (a) A man weighing 714 N lies on a bed of nails. Find the average pressure exerted by a nail on his…
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Q: A fusiform aneurysm bulges or balloons out an artery on all sides (pictured below). If this aneurysm…
A: Question explained below:Explanation:Answer : (a) (b)
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A: Speed in the windpipe (V1) = 15 cm/s To Find: Pressure drop in the constriction
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A: Given Data:Density of olive oil is Diameter of the hose 1 is Diameter of the hose 2 is The area of…
Q: A patient needing a blood transfusion has a blood pressure of 120/70 (this is in units of mm Hg). It…
A: Required pressure= 70 mm Hg = 70×133 Pa Pressure at insertion= 120 mm Hg = 120×133 Pa Lets say the…
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A: The difference in pressure between the inlet and outlet P1-P2=1.2 kPa=1200 Pa. Density of gasoline…
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Q: An intravenous (IV) system is supplying saline solution to a patient at the rate of 0.120 cm3/s…
A: Rate of flow, V = 0.12 cm3 = 0.12 x 10-6 m3 radius, r =0.15 mm =0.15 x 10-3 m length, L =2.5 cm =…
Q: An intravenous (IV) system is supplying saline solution to a patient at the rate of 0.120 cm3 /s…
A: It is given that, P1=8 mm Hg =1.066×103 N/m2η=1×10-3 N.s/m2l=2.50×10-2 mr=0.150×10-3 mQ=1.20×10-7…
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Q: A pumping station uses a Venturi tube to measure the flow rate of gasoline. The density of the…
A: Given Density of gasoline is given as ρ=7.10×102 kg/m3 Radius of the inlet and outlet are…

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- In the calculation of pressures in fire hoses, it is often necessary to take into account the frictional losses suffered by the water as it flows along the hose. Consider a horizontal hose of diameter equal to 3.81 cm and length equal to 30 m carrying 394 liters/min of water. According to the tables used by firefighters, a pressure of 6.1 atm at the upstream end of this hose will result in a pressure of only 2.72 atm at the downstream end; the loss of 3.38 atm is attributed to friction. At what rate in does friction remove energy from the water?Smoking can cause a person's arteries to constrict to 90 % of their normal radius. If the usual pressure difference needed to maintain a healthy blood flow rate in an artery is 405 Pa, what new pressure difference is needed to maintain the same volume flow rate (NOT flow speed)? You may assume that the artery has a length of 10 cm, a radius of 2 mm, and that blood has a viscosity of 2.7×10−3N⋅s/m2.7×10−3N⋅s/m. (in Pa) 450 328 617 500 266Atherosclerosis is a cardiovascular disease that involves the accumulation of cholesterol in the arterial wall in regions with damaged endothelial cells. Assume that the damaged region is a circular hole with radius b. the thickness of the endothelial layer can be neglected. The endothelial layer is impermeable to cholesterol and plasma, except in the damaged region. The subendothelial space can be treated as a semi-infinite porous material with hydraulic conductivity K. The transport of fluid and cholesterol is in the radial direction and is symmetric about the center of the hole. The diffusion coefficient of cholesterol in the subendothelial tissue is D. The concentration of cholesterol and the hydrostatic pressure at r = b are approximately equal to those in the plasma, which are Cp and p0 respectively. The concentration and pressure at r→∞ are assumed to be zero. Determine the distribution of pressure in the subendothelial space in the steady state and evaluate the pressure at r =…
- An intravenous (IV) system is supplying saline solution to a patient at the rate of 0.120 cm3 /s through a needle of radius 0.150 mm and length 2.50 cm. What pressure is needed at the entrance of the needle to cause this flow, assuming the viscosity of the saline solution to be the same as that of water? The gauge pressure of the blood in the patient’s vein is 8.00 mm Hg. (Assume that the temperature is 20ºC .)The aqueous humor in a person's eye is exerting a force of 0.254 N on the 1.27 cm2 area of the cornea. (a) What pressure is this in mm Hg? (b) Is this value within the normal range for pressures in the eye? (YES/NO)(a) A man weighing 742 N lies on a bed of nails. Find the average pressure exerted by a nail on his skin if there are 1110 nails and the flattened point on each nail has a radius of 0.500 mm.(b) Calculate the pressure exerted on the skin by an acupuncture needle of radius 0.100 mm applied with a force of 4.20 N.
- Suppose you measure a standing person’s blood pressure by placing the cuff on his leg 0.495 m below the heart. For this problem, assume that there is no loss of pressure due to resistance in the circulatory system (a reasonable assumption, since major arteries are large). The density of blood is 1.05 × 103 kg/m3. Calculate the systolic pressure you would observe, in units of mm Hg, if the pressure at the heart was 120 over 80 mm Hg. Note that the to (and greater) number is systolic pressure. Ps? Calculate the diastolic pressure you would observe, in unites of mm Hg, if the pressure at heart was 120 overc80cmm Hg. Note that the bottom (smaller) number is the diastolic pressure.Pd?Suppose you measure a standing person’s blood pressure by placing the cuff on his leg 0.525 m below the heart. For this problem, assume that there is no loss of pressure due to resistance in the circulatory system (a reasonable assumption, since major arteries are large). The density of blood is 1.05×103 kg/m3 a. Calculate the systolic pressure you would observe, in units of mm Hgmm Hg, if the pressure at the heart was 120 over 80 mm Hg. Note that the top (and greater) number is the systolic pressure. b. Calculate the diastolic pressure you would observe, in units of mm Hgmm Hg, if the pressure at the heart was 120 over 80 mm Hg. Note that the bottom (smaller) number is the diastolic pressure.A pipe with a radius of 51 cm has water flowing at 5.3 m/s. If water goes into a new pipe with radius 21 cm, how much will the pressure decrease? ΔΡ- unit Pa
- The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a “footprint” of 190 cm2 (area touching the ground), estimate the mass of the car.A fusiform aneurysm bulges or balloons out an artery on all sides (pictured below). If this aneurysm occurs in an aorta, the internal radius may increase from r₁ = 1.1 cm in the normal, healthy section to 12= = 2.2 cm in the diseased section (while staying at the same vertical height). The speed of blood m flow is v₁ = 0.42 in the normal section and the gauge pressure P₁ is 99.98 mmHg. The density of 1 S blood is 1060 kg m³ Fusiform Aneurysm Image from: http://www.okclipart.com/Fusiform-Aneurysm-Clip-Art30koqyaskv/ (a) Calculate the speed of blood v2 in the aneurysm. Answer to two significant figures. Think: What equations dictating the flow through the valve are valid, equation of continuity, Bernoulli or Poiseuille? What simplifications should you make regarding the blood flow. m V₂ = S (b) Calculate the pressure gradient AP = P aneurysm healthy aorta from the healthy aorta into the aneurysm. Think: What equations dictating the flow through the valve are valid, equation of…In an industrial cooling process, water is circulated through a system. If water is pumped with a speed of 5.20 m/s under a pressure of 5.00*10^5 Pa from the first floor through a 3.80-cm diameter pipe, what will be the pressure on the next floor 3.50 m above in a pipe with a diameter of 3.00 cm?