A mass of 0.20 kg of ice at 0 ∘C0\ ^\circ\text{C}0 ∘C is melted, and the water produced is then heated to 20 ∘C20\ ^\circ\text{C}20 ∘C. The specific latent heat of fusion of ice is 334 000 J/kg334\,000\ \text{J/kg}334000 J/kg. The specific heat capacity of water is 4200 J/kg ∘C4200\ \text{J/kg}\ ^\circ\text{C}4200 J/kg ∘C. What is the total energy needed?
16 800 J
66 800 J
50 000 J
83 600 J
40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.