Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 13 - Temperature and Kinetic Theory - Problems: 10

Answer

5.0 mm

Work Step by Step

There’s no problem in the winter as the concrete shrinks. When the concrete heats up in the summer, it expands. A expansion joint must be created between the slabs, equal to the increase in length of the concrete slab as its temperature rises by 50 – 15 = 35 Celsius degrees. $$\Delta \mathcal{l}=\alpha \mathcal{l}_o \Delta T=(12\times 10^{-6}/C^{\circ})(12m)(35 C^{\circ})=0.0050m$$
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