Principles of Physics: A Calculus-Based Text, Volume 1
This successful text was the first to address the latest teaching and learning trends as suggested by the Introductory University Physics Project (IUPP) guidelines. PRINCIPLES OF PHYSICS features a concise approach to traditional topics, an early introduction to modern physics, integration of physics education research pedagogies, as well as the integration of contemporary topics throughout the text. This revision of PRINCIPLES OF PHYSICS also contains text/media integration unlike no other through the PhysicsNow online assessment, tutorial, and course management system.
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THINKING OUTSIDE THE BOX - THIS BOOK'S CONSEQUENCES FOR THE REAL WORLD
“The interior surfaces of the heart and blood vessels are covered with endothelial cells, which reduce friction. When the blood becomes turbulent, endothelial cells divide much faster than normal. The division creates gaps in the coating of the vessel, allowing platelets and cholesterol to attach and form rough patches, and plaque begins to form.” [”Principles of Physics: A Calculus-Based Text, Volume 1” by Raymond A Serway, John W Jewett - Wadsworth Publishing Co Inc, 2011, p.499]
This degeneration is arteriosclerosis, with the rough patches causing blood clots. With increasing age, the liver produces more and more cholesterol in an effort to keep the cells lining the blood vessels in an elastic state* (culminating in excessive, and potentially dangerous, levels of cholesterol that could block arteries).
* A textbook employed worldwide [“Essentials of Human Anatomy and Physiology" (Tenth Edition) by Elaine N. Marieb - Pearson Education Limited 2014, p.80] says, "The cholesterol helps keep the cell membrane fluid."
Lowering cholesterol reduces attachment of this lipid to the vessel. But it doesn’t affect other arteriosclerotic causative factors like platelets, endothelial cells and blood flow. Also - reduction of cholesterol, and fluidity, in cell membranes would increase friction between vessel walls and passing blood plasma/cells, eventually leading to rough patches and degeneration of vessels. Therefore; cholesterol-lowering drugs alter the pathway to, but do not cure or prevent, arteriosclerosis.
How much charge passes in 2 minutes through a junction through which a steady current of 5A exists?