Three building materials, plasterboard [k = 0.3 J/(s · m · C°)], brick [k = 0.6 J/(s · m · C°)], and wood [k = 0.1 J/(s · m · C°)], are sandwiched together as the drawing illustrates. The temperatures at the inside and outside surfaces are 27° C and 0°C, respectively. Each material has the same thickness and cross-sectional area. Find the temperature at the plasterboard-brick interface and the brick-wood interface.

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter16: Temperature And The Kinetic Theory Of Gases
Section: Chapter Questions
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Three building materials, plasterboard [k = 0.3 J/(s · m · C°)], brick [k = 0.6 J/(s · m · C°)], and wood [k = 0.1 J/(s · m · C°)], are sandwiched together as the drawing illustrates. The temperatures at the inside and outside surfaces are 27° C and 0°C, respectively. Each material has the same thickness and cross-sectional area. Find the temperature at the plasterboard-brick interface and the brick-wood interface.

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