2. You are a medical professional attempting to explore the problem of blood pressure drops in diseased, narrowed arteries. The arteries have approximately circular cross-section. In a section of an artery, the diameter d, is 0.0050 m and the speed v₁ of the blood is 0.498 m/s. The section narrows into another segment of artery with diameter d₂ = 0.0020 m. The height relative to the laboratory floor does not change as you see. (y₁ = y₂.) The density of this blood is 1.05x10³3 kg/m³. NOTE: The diagram below shows dimensions and arrows qualitatively and may not be exactly at scale. (a) section of artery? (b) second section ? (c) (d) sections? What is the circular cross-sectional area A₁ of the first What is the circular cross-sectional area A₂ of the What is the speed v₂ in the narrow section of artery? What is the pressure difference P₁ - P₂ between the two

2. You are a medical professional attempting to explore the problem of blood pressure drops in diseased, narrowed arteries. The arteries have approximately circular cross-section. In a section of an artery, the diameter d, is 0.0050 m and the speed v₁ of the blood is 0.498 m/s. The section narrows into another segment of artery with diameter d₂ = 0.0020 m. The height relative to the laboratory floor does not change as you see. (y₁ = y₂.) The density of this blood is 1.05x10³3 kg/m³. NOTE: The diagram below shows dimensions and arrows qualitatively and may not be exactly at scale. (a) section of artery? (b) second section ? (c) (d) sections? What is the circular cross-sectional area A₁ of the first What is the circular cross-sectional area A₂ of the What is the speed v₂ in the narrow section of artery? What is the pressure difference P₁ - P₂ between the two

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter15: Fluids

Section: Chapter Questions

Problem 46PQ

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Similar questions

The human circulation system has approximately 1109 capillary vessels. Each vessel has a diameter of about 8 m. Assuming cardiac output is 5 L/min, determine the average velocity of blood flow through each capillary vessel.
(a) As blood passes through the capillary bed in an organ, the capillaries join to form venules (small veins). If the blood speed increases by a factor of 4.00 and the total cross-sectional area of the venules is 10.0 cm2, what is the total cross-sectional area of the capillaries feeding these venules? (b) How many capillaries are involved if their average diameter is 10.0 m?
What is the greatest average speed of blood flow at 37° C in an artery of radius 2.00 mm if the flow is to remain laminar? What is the corresponding flow rate? Take the density of blood to be 1025 kg/m3.
Considering the magnitude of typical arterial blood pressures, why are mercury rather than water manometers used for these measurements?
How tall must a water-filled manometer be to measure blood pressures as high as 300 mm Hg?
Liquid toxic waste with a density of 1752 kg/m3 is flowing through a section of pipe with a radius of 0.312 m at a velocity of 1.64 m/s. a. What is the velocity of the waste after it goes through a constriction and enters a second section of pipe with a radius of 0.222 m? b. If the waste is under a pressure of 850,000 Pa in the first section of pipe, what is the pressure in the second (constricted) section of pipe?
How tall must be to measure blood pressure as high as 300 mm Hg?
The flow rate of blood through 2.00106 -m-radius capillary is 3.80109 cm3/s. (a) What is the speed of the blood flow? (This small speed allows time for diffusion of materials to and from the blood.) (b) Assuming all the blood in the body passes through capillaries, how many of them must there be to carry a total flow of 90.0 cm3/s? (The large number obtained is an overestimate, but it is still reasonable.)
A tank with a flat bottom of area A and vertical sides is filled to a depth h with water. The pressure is P0 at the top surface. (a) What is the absolute pressure at the bottom of the tank? (b) Suppose an object of mass M and density less than the density of water is placed into the tank and floats. No water overflows. What is the resulting increase in pressure at the bottom of the tank?
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A manometer is shown in Figure P15.36. Rank the pressures at the five locations indicated from highest to lowest. Indicate equal pressures, if any. FIGURE P15.36
Figure P15.47 shows a stream of water in steady flow from a kitchen faucet. At the faucet, the diameter of the stream is 0.960 cm. The stream fills a 125-cm3 container in 16.3 s. Find the diameter of the stream 13.0 cm below the opening of the faucet. Figure P15.47