Answer to Question #127737 in Physics for Asssag

Question

How to calculate the energy spent on heating a metallic and plastic glucose barrel up to 50 ° C

Answer 1

Let's assume, the glucose barrel has the mass $m = 300 kg$ and was kept at temperature $T_0 = 25\degree C = 298 K$. The specific heat capacity of glucose is $с = 1255 \dfrac{J}{kg\cdot K}$.

Then the energy spent on heating up to $T = 50\degree C = 323 K$ will be:

$$Q = mc(T - T_0) = 300\cdot 1255\cdot (323 - 298) \approx 9.4MJ$$

Answer. 9.4 MJ.