**Problem 2: Expansion Cracks in Concrete Highways***A concrete highway is constructed with slabs each measuring 12.0 meters in length at an initial temperature of 18 °C. To prevent buckling, how wide should the expansion cracks be at 18 °C, considering the annual extreme temperatures range from -27 °C to 50 °C? The coefficient of linear expansion for concrete is given as \(1.20 \times 10^{-5} \, \text{°C}^{-1}\).*#### Answer:\[ \_\_\_\_\_\_\_\_\_\_\_ \text{ meters} \]

The initial length of the slabs, L0=12.0 m The change in temperature, ∆T=50°C-27°C=23°C The coefficient of linear expansion of concrete, α=1.20×10-5°C-1The expression for the change in length of the slabs, ∆L=αL0∆T Substitute, ∆L=1.20×10-5°C-112.0 m23°C=0.003312 m

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2. A concrete highway is built of slabs 12.0 m long (at 18 °C). How wide should the expansion cracks be (at 18 °C) between the slabs to prevent buckling if the annual extreme temperatures are -27 °C and 50 °C?(the coefficient of linear expansion of concrete is 1.20 x 10–5 °C-l) meters

2. A concrete highway is built of slabs 12.0 m long (at 18 °C). How wide should the expansion cracks be (at 18 °C) between the slabs to prevent buckling if the annual extreme temperatures are -27 °C and 50 °C?(the coefficient of linear expansion of concrete is 1.20 x 10–5 °C-l) meters

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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