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What is the resistance of an underground coal roadway if the pressure is 1.5 kPa and the air velocity is 10 m/s? The dimensions of
What is the resistance of an underground coal roadway if the pressure is 1.5 kPa and the air velocity is 10 m/s? The dimensions of the roadway are as follows: 3 m by 5 m. The length of the heading is 20 m
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College Physics With An Integrated Approach To Forces And Kinematics
Authors: Alan Giambattista
5th Edition
126054771X, 978-1260547719
