A copper sheet of thickness 3.10 mm is bonded to a steel sheet of thickness 4.10 mm. The outside surface of the copper sheet is held at a temperature of 150.0 �C and the steel sheet at 33.0 �C. (The thermal conductivity is 386 W/(m K) for copper and 16.3 W/(m K) for steel.) (a) Determine the temperature of the copper�steel interface., and (b) How much heat is conducted through 1 m2 of the combined sheets per second?

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