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At a fabrication plant, a hot metal forging has a mass of 75 kg and a...

At a fabrication plant, a hot metal forging has a mass of 75 kg and a specific heat capacity of 430 J/(kg · °C). To harden it, the forging is immersed in 710 kg of oil that has a temperature of 32° C and a specific heat capacity of 2500 J/(kg · °C). The final temperature of the oil and forging at thermal equilibrium is 48° C. Assuming that heat flows only between the forging and the oil, determine the initial temperature of the forging.

______ degrees C

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Answer #1

Heat lost by the metal = Heat gained by the oil , ) (m.n, C, C, T, T.-be the mass, specific heat, and intial temp of metal and oil -m mc mc 710 x 2500 (48 -32 +48 75 x 430 - 928.6°C Thus, the initial temperature of the forging was 928.6°C

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