Three panels made from different materials are tested as insulation for identical warm storage containers. Each container starts at the same temperature and is kept in the same room. The table shows the properties of each panel.
| Panel | Thermal conductivity in W/m °C | Thickness in mm |
|---|---|---|
| A | 0.04 | 30 |
| B | 0.12 | 20 |
| C | 1.0 | 10 |
Explain which panel should be chosen to make a container cool most slowly. Use data from the table in your answer.
104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.