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A concrete slab of a sidewalk heats up in the Sun. The temperature changes from 20°C to 40°C. The coefficient of thermal linear expansion for concrete is 1.2 × 10−5 °C−1. What is the percentage change in the length of the slab?

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A concrete slab of a sidewalk heats up in the Sun. The temperature changes from 20°C to 40°C. The coefficient of thermal linear expansion for concrete is 1.2 × 10−5 °C−1. What is the percentage change in the length of the slab?






 
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