133. assignment (thermal expansion - rivets)
1. Aluminum rivets used in airplane construction are made slightly too large for the rivet holes to be sure of a tight fit. The rivets are cooled with dry ice (-78.5° C) before they are driven into the holes. If the holes have a diameter of 0.6400 cm at 20.9° C, what should be the diameter of the rivets at 20.5° C if they are to just fit when cooled to the temperature of dry ice?
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