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Given that the increase in length, over a 40mm gauge length, is 0.08mm (this is a class average) over a temperature range of 77oC (23

Given that the increase in length, over a 40mm gauge length, is 0.08mm (this is a class average) over a temperature range of 77oC (23 to 100). The coefficient of thermal expansion for the aluminum, to two significant figures, is:

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