College Physics (10th Edition)
College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 1, Problem 57PP

Calculating Lung Volume in Humans. In human lungs, oxygen and carbon dioxide are exchanged in the blood within many small sacs called alveoli. Alveoli provide a large surface area for gas exchange. Recent careful measurements show that the total number of alveoli in a typical human lung pair is about 480 × 106 and that the average volume of a single alveclus is 4.2 × 106 μm3. (Recall the equation for the volume of a sphere, V = 4 3 πr3 and the equation for the area of a sphere. A = 4 πr2.)

57. What is the total volume of the gas-exchanging region of the lungs?

  1. A.    2000 μm3
  2. B.     2m3
  3. C.     2.0 L
  4. D.    120 L
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Calculating lung volume in humans. In humans, oxygen and carbon dioxide are exchanged in the blood within many small sacs called alveoli in the lungs. Alveoli provide a large surface area for gas exchange. Recent careful measurements show that the total number of alveoli in a typical pair of lungs is about 480 x 10 6 and that the average volume of a single alveolus is 4.2 x 10 6 cubic micrometer.
Grains of fine California beach sand are approximately spheres with an average radius of 50.0 μm and are made of silicon dioxide, which has a density of 2.80 × 103 kg/m3. What mass of sand grains would have a total surface area (the total area of all the individual spheres) equal to the surface area of a cube 1.10 m on an edge?
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College Physics (10th Edition)

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