1.

Calculate the change in length of a steel bar whose temperature is raised by 125°C, coefficient of linear expansion α = 12 × 10-6 per degree Celsius, the initial length of bar L = 3 meters

A. 0.045 cm
B. 0.45 cm
C. 4.5 cm
D. 450 cm
Answer» C. 4.5 cm


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