When cast iron with a mass of 4 tons cools, 54 MJ of heat is released. How many degrees will the temperature
| February 12, 2021 | education
When cast iron with a mass of 4 tons cools, 54 MJ of heat is released. How many degrees will the temperature of the cast iron change?
Given: m (mass of cooled cast iron) = 4 tons (4 * 10 ^ 3 kg); Q (released heat) = 54 MJ (54 * 10 ^ 6 J); Cch (specific heat capacity of cast iron) = 540 J / (kg * K).
Cast iron temperature change: Δt = Q / (Сч * m) = 54 * 10 ^ 6 / (540 * 4 * 10 ^ 3) = 25 ºC.
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