Explanation Write the expression for the pressure on top. P top = ρ g y + P bot (I) Here, P top is the pressure at top, P bot is the pressure at bottom, ρ is the density, g is the acceleration due to gravity, y is the height. Place the origin of the co-ordinate at the top of the building unless it would not be consistent. The bottom of the building is at ( y = − h ) . Rearrange equation (I) to obtain expression for pressure difference. P top − P bot = − ρ g h P bot − P top = ρ g h x

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ISBN: 9780100546714

Author: Katz

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Chapter 15, Problem 14PQ

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