9 . The coefficient of linear expansion of aluminum is 23 10 - 6 /C°. A circular
ID: 1408754 • Letter: 9
Question
9.The coefficient of linear expansion of aluminum is 23 10-6/C°. A circular hole in an aluminum plate is 2.725 cm in diameter at 0 °C. What is the diameter of the hole if the temperature of the plate is raised to 100 °C? 9.The coefficient of linear expansion of aluminum is 23 10-6/C°. A circular hole in an aluminum plate is 2.725 cm in diameter at 0 °C. What is the diameter of the hole if the temperature of the plate is raised to 100 °C? 9.The coefficient of linear expansion of aluminum is 23 10-6/C°. A circular hole in an aluminum plate is 2.725 cm in diameter at 0 °C. What is the diameter of the hole if the temperature of the plate is raised to 100 °C?Explanation / Answer
L = L0 (1 + alpha*deltaT)
for aluminium.
alpha = 23 x 10^-6 per deg C
L0 = 2.725 cm
deltaT = 100 - 0 = 100 deg C
L =2.725 (1 + (100 x 23 x 10^-6) )
L = 2.731 cm
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