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April 20, 2014

Homework Help: physics

Posted by shaknocka on Thursday, May 5, 2011 at 6:01pm.

At a fabrication plant, a hot metal forging has a mass of 78.5 kg and a specific heat capacity of 426 J/(kg C). To harden it, the forging is quenched by immersion in 788 kg of oil that has a temperature of 30.3 C and a specific heat capacity of 2770 J/(kg C). The final temperature of the oil and forging at thermal equilibrium is 55.4 C. Assuming that heat flows only between the forging and the oil, determine the initial temperature in degrees Celsius of the forging.

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