The temperature of a brass piece weighing 0.2 kg is 365 degrees. How much heat it will transfer
August 31, 2021 | education|
The temperature of a brass piece weighing 0.2 kg is 365 degrees. How much heat it will transfer to surrounding bodies when it cools down to a temperature of 15 degrees.
To find out the heat given off by the specified brass part to the surrounding bodies, consider the formula: Qx = Cl * md * (tout – t), where Cl – beats. heat capacity of brass (const; Cl = 378 J / (kg * K)); md is the mass of the specified brass part (md = 0.2 kg); tin – the initial temperature of the part (tin = 365 ºС); t – required temperature (t = 15 ºС).
Let’s perform the calculation: Qx = Cl * md * (tinx – t) = 378 * 0.2 * (365 – 15) = 26.46 * 10 ^ 3 J.
Answer: The heat given off by the indicated brass part to the surrounding bodies is equal to 26.46 kJ.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.