Thermal Expansion: By what length will a slab of concrete that is originally 18 m long contract when the temperature drops from 24°C to -16°C? The coefficient of linear thermal expansion for this concrete is 1.0 × 10-5 K-1.
A. 0.50 cm
B. 0.72 cm
C. 1.2 cm
D. 1.5 cm
Answer: B
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