The body of what mass can be heated by 30 degrees, spending 24 kJ. The body is made of zinc
| June 23, 2021 | education
Given:
Δt = 30 ° C;
Q = 24 kJ (translated into SI) = 24000 J;
c = 400 J / (kg * ° C) – specific heat capacity of zinc.
To find:
m -?
Decision:
To find the mass, we use the formula: Q = c * m * Δt, hence m = Q / (c * Δt) = 24000 / (400 * 30) = 2 kg;
Answer: A zinc body weighing 2 kg can be heated by 30 degrees, spending 24 kJ.
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