How much will an ingot of brass with a mass of 3 kg heat up if you give it 24 kJ of energy?

univerkov | September 6, 2021 | education

Problem data: m (mass of the taken brass ingot) = 3 kg; Q (thermal energy reported to the ingot) = 24 kJ (24 * 10 ^ 3 J).

Reference values: Cl (specific heat of brass) = 400 J / (kg * K).

The increase in the temperature of the brass ingot is expressed from the formula: Q = Сl * m * Δt, whence Δt = Q / (Сl * m).

Let’s calculate: Δt = 24 * 10 ^ 3 / (400 * 3) = 20 ºС.

Answer: The brass ingot will be heated by 20 ° C.

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