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Thermal Properties of Matter
Specific Heat Capacity and Calorimetry
1 question from 1 paper, each with its answer.
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Concepts tested
- heat capacity of spheres of different radii
All Questions
2020 1 question
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The quantities of heat required to raise the temperature of two solid copper spheres of radii $r_1$ and $r_2$ ($r_1=1.5\,r_2$) through 1 K are in the ratio:$\Delta Q = ms\Delta T = \left(\frac{4}{3}\pi r^3\rho\right)s\Delta T$ Same material and same $\Delta T$, so $\Delta Q \propto r^3$ $\frac{\Delta Q_1}{\Delta Q_2} = \left(\frac{r_1}{r_2}\right)^3 = (1.5)^3 = \frac{27}{8}$
