A student compares two insulating jackets on the same water container. Equal masses of water start at 80 ∘C80\ ^\circ\mathrm{C}80 ∘C. The room temperature is constant.
| Jacket | Temperature after 5 min in ∘C^\circ\mathrm{C}∘C | Temperature after 10 min in ∘C^\circ\mathrm{C}∘C |
|---|---|---|
| P | 70 | 62 |
| Q | 74 | 69 |
What is the ratio of the mean rate of energy loss with P to that with Q between 5 and 10 min?
8:58:58:5
18:1118:1118:11
10:610:610:6
5:85:85:8
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.