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 43
Q
How fast does water flow from a hole at the bottom of a very wide, 4.7-m-deep storage tank filled with water? Ignore viscosity.
A
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VIDEO TRANSCRIPT
This is Giancoli Answers with Mr. Dychko. Torricelli's theorem works here because the tank has a very wide top and so that means the speed of the drop in the water level in the tank will be really small and negligible in which case we can use Torricelli's theorem which says that the speed of the water will come out the spout at the bottom will be the square root of 2g times the difference in height between where the spout is and where the top of the water level is. So that's square root of 2 times 9.8 meters per seconds squared times 4.7 meters which gives 9.6 meters per second.
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