A Bridge Is Made with Segments of Concrete 50 M

question 9

Multiple Choice

A bridge is made with segments of concrete 50 m long. If the linear expansion coefficient is 12 × 10−6 (°C) −1, how much spacing (in cm) is needed to allow for expansion during an extreme temperature change of 150°F?

• A)10
• B)2.5
• C)7.5
• D)5.0
• E)9.5

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