A steel part weighing 20 kg when machined on the machine was heated from 10C to 60C.
| June 23, 2021 | education
A steel part weighing 20 kg when machined on the machine was heated from 10C to 60C. How much heat did the part receive?
To find the amount of heat received by the taken part during processing, we use the formula: Q = Cc * m * (t2 – t1).
Constant and variable values: Cc – heat capacity of steel (Cc = 500 J / (kg * K)); m is the mass of the workpiece (m = 20 kg); t2 – temperature after treatment (t2 = 60 ºС); t1 – initial temperature (t1 = 10 ºС).
Calculation: Q = Cc * m * (t2 – t1) = 500 * 20 * (60 – 10) = 500 * 10 ^ 3 J = 500 kJ.
Answer: The workpiece received 500 kJ of heat.
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