College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Chapter 14, Problem 69RPP
To determine
The reason behind the need of having huge number of capillaries and venules in a human circulatory system from the given options.
(a) They provide nutrients (such as
(b) They distribute water uniformly throughout the body.
(c) They reduce the resistance of the circulatory system.
(d) b and c
(e) a, b, and c
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45.
Insects do not have lungs as we do, nor do they breathe through
their mouths. Instead, they have a system of tiny tubes, called tra-
cheae, through which oxygen diffuses into their bodies. The tracheae begin
at the surface of an insect's body and penetrate into the interior. Suppose
that a trachea is 1.9 mm long with a cross-sectional area of 2.1 × 10-º m².
The concentration of oxygen in the air outside the insect is 0.28 kg/m², and
the diffusion constant is 1.1 × 10-5 m²/s. If the mass per second of oxygen
diffusing through a trachea is 1.7 X 10-12 kg/s, find the oxygen concentra-
tion at the interior end of the tube.
4
A small blood vessels near skin surface has a radius of 10um a length of 1 um and the pressure drop along the blood vessels is 2.50Pa.The viscosity of the blood is 0.00027pPa.s.
i. What is the volume flow rate of blood through this blood vessels? What is the velocity of blood flow?
ii.Vasodilation causes the radius of thus blood vessels to increase to 12um, while leaving the pressure drop along the vessel unchanged? What is the volume flow rate through this blood vessel now? What is the velocity of blood flow?
Chapter 14 Solutions
College Physics
Ch. 14 - Prob. 1RQCh. 14 - Prob. 2RQCh. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - Prob. 5RQCh. 14 - Review Question 14.6 Describe some of the...Ch. 14 - Review Question 14.7 When a skydiver falls at...Ch. 14 - Prob. 1MCQCh. 14 - A river flows downstream and widens, and the flow...Ch. 14 - Prob. 3MCQ
Ch. 14 - Prob. 4MCQCh. 14 - 5. As a river approaches a dam, the width of the...Ch. 14 - Prob. 6MCQCh. 14 - What is viscous flow? a. A physical phenomenon b....Ch. 14 - 8. The heart does about 1 J of work pumping blood...Ch. 14 - Several air bubbles are present in water flowing...Ch. 14 - A small metal ball is released from just below the...Ch. 14 - 11. A small metal ball is launched downward from...Ch. 14 - You have two identical large jugs with small holes...Ch. 14 - 13. Why does much of the pressure drop in the...Ch. 14 - If you partly close the end of a hose with your...Ch. 14 - Compare and contrast work-energy bar charts, which...Ch. 14 - Consider Bernoulli's equation, Poiseuille's law,...Ch. 14 - You need a liquid that will exhibit turbulent flow...Ch. 14 - Watering plants You water flowers outside your...Ch. 14 - 2. Irrigation canal You live neat an irrigation...Ch. 14 - Prob. 3PCh. 14 - 4. The main waterline for a neighborhood delivers...Ch. 14 - Prob. 5PCh. 14 - Prob. 6PCh. 14 - Represent the process sketched in Figure P14.7...Ch. 14 - * Represent the process sketched in Figure P14.8...Ch. 14 - 9. Fluid flow Problem Write a symbolic equation...Ch. 14 - Prob. 10PCh. 14 - Prob. 11PCh. 14 - Prob. 12PCh. 14 - 13. An application of Bernoulli’s equation is...Ch. 14 - Prob. 14PCh. 14 - Prob. 15PCh. 14 - * Wine flow from barrel While visiting a winery,...Ch. 14 - Water flow in city water system Water is pumped at...Ch. 14 - * The pressure of water flowing through a...Ch. 14 - * Siphoning water You want to siphon rainwater and...Ch. 14 - Prob. 20PCh. 14 - * BIO Blood flow In artery Blood flows at an...Ch. 14 - Prob. 22PCh. 14 - Prob. 23PCh. 14 - 24. * BIO Flutter in blood vessel A person has a ...Ch. 14 - 25. * BIO Effect of smoking on arteriole radius...Ch. 14 - Prob. 26PCh. 14 - 27. * You have a U-shaped tube open at both ends....Ch. 14 - Prob. 28PCh. 14 - Prob. 29PCh. 14 - Prob. 30PCh. 14 - Prob. 31PCh. 14 - Prob. 32PCh. 14 - 33. * BIO Blood flow through capillaries Your...Ch. 14 - Prob. 34PCh. 14 - * A piston pushes 20C water through a horizontal...Ch. 14 - Prob. 36PCh. 14 - * A syringe is filled with water and fixed at the...Ch. 14 - Prob. 38PCh. 14 - 39. * EST Air drag when biking Estimate the drag...Ch. 14 - Prob. 41PCh. 14 - * EST Earth exerts a constant downward force of...Ch. 14 - Prob. 43PCh. 14 - *Terminal speed of balloon A balloon of mass m...Ch. 14 - You observe four different liquids (listed with...Ch. 14 - Prob. 48GPCh. 14 - 50. ** Viscous friction with Bernoulli We can...Ch. 14 - 51. ** (a) Show that the work W done per unit time...Ch. 14 - Prob. 52GPCh. 14 - 53. ** BIO Essential hypertension Suppose your...Ch. 14 - Prob. 54GPCh. 14 - A 0.20-m-radius balloon falls at terminal speed 40...Ch. 14 - 56. ** Terminal speed of skier A skier going down...Ch. 14 - kg/m3 is placed in a 20C lake Determine the...Ch. 14 - 58. ** EST Comet crash On June 30, 1908, a...Ch. 14 - EST Intravenous (IV) feeding A patient in the...Ch. 14 - EST Intravenous (IV) feeding A patient in the...Ch. 14 - EST Intravenous (IV) feeding A patient in the...Ch. 14 - EST Intravenous (IV) feeding A patient in the...Ch. 14 - EST Intravenous (IV) feeding A patient in the...Ch. 14 - EST Intravenous (IV) feeding A patient in the...Ch. 14 - EST Intravenous (IV) feeding A patient in the...Ch. 14 - Prob. 66RPPCh. 14 - Prob. 67RPPCh. 14 - Prob. 68RPPCh. 14 - Prob. 69RPPCh. 14 - Which number below best represents the ratio of...
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