Giancoli's Physics: Principles with Applications, 7th Edition
10
Fluids
Change chapter10-2: Density and Specific Gravity
10-3 to 10-6: Pressure; Pascal's Principle
10-7: Buoyancy and Archimedes' Principle
10-8 to 10-10: Fluid Flow, Bernoulli's Equation
10-11: Viscosity
10-12: Flow in Tubes; Poiseuille's Equation
10-13: Surface Tension and Capillarity
10-14: Pumps; the Heart
Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 12
Q
How high would the level be in an alcohol barometer at normal atmospheric pressure?
A
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VIDEO TRANSCRIPT
This is Giancoli Answers with Mr. Dychko. With a barometer, the pressure that it measures is the density of the fluid inside times g times the height of the fluid and we can solve for the height by dividing both sides by density and dividing both sides by g. So the height of the alcohol column would be the atmospheric pressure 1.013 times 10 to the 5 newtons per square meter divided by the density of alcohol— 0.79 times 10 to the 3 kilograms per cubic meter— times acceleration due to gravity or gravitational field strength— 9.8 newtons per kilogram— and that gives 13 meters will be the height of the alcohol column.
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