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A piece of lead [ c = 128 J/(kgC)] is heated from 18.0 C to 39.4 C. The same amount of heat is added to

A piece of lead [c = 128 J/(kgC)] is heated from 18.0 C to 39.4 C. The same amount of heat is added to a piece of copper [c = 387 J/(kgC)]. The mass and initial temperature of the copper are the same as for the lead. Determine the final temperature Tf of the copper.

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