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April 20, 2014

Homework Help: physics

Posted by Anna on Wednesday, March 13, 2013 at 6:50pm.

At a fabrication plant, a hot metal forging has a mass of 74 kg and a specific heat capacity of 430 J/(kgC). To harden it, the forging is quenched by immersion in 710 kg of oil that has a temperature of 32C and a specific heat capacity of 3000 J/(kgC). The final temperature of the oil and forging at thermal equilibrium is 47C. Assuming that heat flows only between the forging and the oil, determine the initial temperature of the forging.

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