An engineer testing an electric vehicle's thermal management system monitors the temperature of an ethylene glycol coolant as it passes through a heat exchanger.
The table below shows the data collected during the test run.
| Parameter | Value |
|---|---|
| Mass of ethylene glycol | 1.85 kg |
| Initial temperature | −15.4 ∘C-15.4\text{ }^{\circ}\text{C}−15.4 ∘C |
| Final temperature | 38.2 ∘C38.2\text{ }^{\circ}\text{C}38.2 ∘C |
| Change in thermal energy of coolant | 238,680 J238,680\text{ J}238,680 J |
Using the data in the table, calculate the temperature increase of the ethylene glycol coolant.
36 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.