Two identical containers hold equal masses of water at the same initial temperature. Container X has a thick insulating jacket. Container Y has a thin jacket of the same material. Both are left in the same cooler room.
Which prediction is correct?
X cools more quickly; both eventually reach room temperature.
X cools more slowly; both eventually reach room temperature.
X cools more slowly; X remains permanently above room temperature.
X cools more quickly; Y remains permanently above room temperature.
100 exam-style questions on Edexcel GCSE Physics 3.2 Dissipation and efficiency, covering 3.2.1 Dissipation of energy, 3.2.2 Reducing unwanted energy transfers, 3.2.3 Efficiency, and 3.2.4 Increasing efficiency. Each one has a worked solution and a mark scheme showing where the marks go.