The coefficient of linear expansion of the steel in a certain bridge is 1.10 × 10^-⁵/C^o. If at a minimum winter temperature of -30^oC the bridge is 30.5 m long, at the summer maximum of 40^oC its length is increased about

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The change in length can be calculated using the formula ΔL = L₀αΔT. Here, L₀ = 30.5 m, α = 1.10 × 10⁻⁵ /°C, and ΔT = 40°C - (-30°C) = 70°C. Substituting these values gives ΔL ≈ 0.0254 m, which is 2.54 cm.

The Coefficient of Linear Expansion of the Steel in a Certain