Posted by **Eric** on Monday, September 20, 2010 at 9:29am.

A brass lid screws tightly onto a glass jar at 20 oC. To help open the jar, it can be

placed into a bath of hot water. After this treatment, the temperature of the lid and the

jar are both 60 oC. The inside diameter of the lid is 8.0 cm at 20 oC. Find the size of the

gap (difference in radius) that develops by this procedure.

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