An electronics engineer tests four materials for use in a heat sink. A 0.50 kg block of each material is warmed from 20 ∘C20\ ^\circ\mathrm{C}20 ∘C to 40 ∘C40\ ^\circ\mathrm{C}40 ∘C. Each block remains solid and no energy is transferred to the surroundings.
| Material | Energy transferred in kJ\mathrm{kJ}kJ |
|---|---|
| J | 9.0 |
| K | 4.0 |
| L | 12.0 |
| M | 6.5 |
Which test result provides evidence for the greatest specific heat capacity?
Material L
Material M
Material J
Material K
110 exam-style questions on Edexcel GCSE Physics 14.2 Specific heat capacity and latent heat, covering 14.2.1 Heating, temperature and changes of state, 14.2.2 Specific heat capacity and specific latent heat, 14.2.3 Specific heat capacity calculation, 14.2.4 Specific latent heat calculation, and 14.2.5 Reducing energy transfer through thermal insulation. Each one has a worked solution and a mark scheme showing where the marks go.