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September 19, 2014

Homework Help: Physics

Posted by Britney on Friday, December 11, 2009 at 10:02am.

Wine bottles are never completely filled: a small volume of air is left in the glass bottle's cylindrically shaped neck (inner diameter d = 18.5mm) to allow for wine's fairly large coefficient of thermal expansion. The distance H between the surface of the liquid contents and the bottom of the cork is called the "headspace height" , and is typically H = 1.5cm for a 750mL bottle filled at 20degC. Due to its alcoholic content, wine's coefficient of volume expansion is about double that of water; in comparison, the thermal expansion of glass can be neglected.

Estimate H if the bottle is kept at 11degC.

Estimate H if the bottle is kept at 32degC.

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