The coefficient of linear expansion of steel is 12 × 10^-6 K^-1.What is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 K from winter to summer? A)1.2 cm B)1.4 cm C)1.6 cm D)1.8 cm E)2.0 cm

Question

Quizplus · Accepted Answer

The change in length (ΔL) is calculated using the formula ΔL = αLΔT, where α is the coefficient of linear expansion, L is the original length, and ΔT is the temperature change. Substituting the given values: ΔL = (12 × 10^-6 K^-1)(25 m)(40 K) = 0.012 m = 1.2 cm.

The Coefficient of Linear Expansion of Steel Is 12 ×