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Hi Qian! Here is my assignment! See you soon. 

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Hi Qian! Here is my assignment! See you soon. 

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Rick: Glass transition temperature ski boot

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Rick: Glass transition temperature ski boot

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Assignment: Estimate the range of Tg of an polymeric ski boot that is elastic at room temperature, and stiff when it’s cold.

Answer:
Let’s say room temperature is 19 degrees Celsius , and cold is 0 degrees
The Tg is the glass transition temperature. That means that Tg is the process (in temperature) that the polymer has to go from stiff till elastic.

So the range of the Tg of the polymeric ski boot will be from +/- 3 degrees till 15 degrees. Because the boot still has to be stiff at 0 degrees , and the boot already has to be elastic at 19 degrees