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At a fabrication plant, a hot metal forging has a mass of 87.6 kg and a...

At a fabrication plant, a hot metal forging has a mass of 87.6 kg and a specific heat capacity of 434 J/(kg C°). To harden it, the forging is quenched by immersion in 749 kg of oil that has a temperature of 35.5 °C and a specific heat capacity of 2890 J/(kg C°). The final temperature of the oil and forging at thermal equilibrium is 65.0 °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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