Munson, Young and Okiishi's Fundamentals of Fluid Mechanics, Binder Ready Version 8th Edition

Published by Wiley
ISBN 10: 1119080703
ISBN 13: 978-1-11908-070-1

Chapter 1 - Problems - Page 31: 1.17

Answer

constant 3.09 is dimensional and the equation is not valid in other units

Work Step by Step

where $ Q = 3.09 B H ^{3/2}$ we put dimension in the equation as follows : $ \frac{ft^{3}}{sec} = 3.09 ft ft^{3/2}$ therefor $3.09 = \frac{ft^{1/2}}{sec} $ so it is dimensional if we change unites to meter and hour , 3.09 will change divided by 3600
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