Questions and Discussion points. Question 1: You have a box with sides of length L = 10 m. This box is made of aluminum with coefficient of linear expansion a = 24 x 10-6 °C-1. On a winter day you decided to cover that box from all sides with thin layer of copper in a manner that leaves no gap between the two. Copper has coefficient of linear expansion a = 17 x 10-6 °C-1. What will happen to that covered box in the summer? a) Nothing at all, the aluminum box and its copper cover will contract together. b) Nothing at all, the aluminum bax and its copper cover will expand together. c) The coating most likely will crack. d) A gap between the aluminum box and the copper cover will be created.

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