The New River Gorge bridge in West Virginia is a 518-m-long steel arch. How much will its length change between temperature extremes −17°C
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linear thermal expansion coef Fe 11.8e-6 /K ∆L/L = α∆T, α is linear thermal expansion coef ∆L = αL∆T ∆L = αL∆T = (11.8e-6 /K)(51800 cm)(46K) = 28 cm
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