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To make a secure fit, rivets that are larger than the rivet hole are often used and the rivet is cooled (usually in dry ice) before it is placed in the hole. A steel rivet 1.806 cm in diameter is to be placed in a hole 1.805 cm in diameter. To what temperature (on the Celsius scale) must the rivet be cooled if it is to fit in the hole (at 20.0oC)?

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