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A commonly used method of fastening one part to another part is called " shrink fitting." A steel rod has a diameter of 2.0026cm, and a flat plate contains a hole whose diameter is 2.0000cm. The rodis cooled so that it just fits into the hole. When the rod warms up, the enormous thermalstress exerted by the plate holds the rod securely to the plate. By how many Celsius degrees should the rod be cooled? |
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