21 000 J21\,000\ \text{J}21000 J of energy is transferred to 0.50 kg of water.
The specific heat capacity of water is 4200 J/kg ∘C4200\ \text{J/kg}\ {}^\circ\text{C}4200 J/kg ∘C.
Use the equation: change in thermal energy=mass×specific heat capacity×change in temperature\text{change in thermal energy} = \text{mass} \times \text{specific heat capacity} \times \text{change in temperature}change in thermal energy=mass×specific heat capacity×change in temperature
What is the increase in temperature of the water?
0.10 ∘C0.10\ {}^\circ\text{C}0.10 ∘C
2.5 ∘C2.5\ {}^\circ\text{C}2.5 ∘C
5.0 ∘C5.0\ {}^\circ\text{C}5.0 ∘C
10 ∘C10\ {}^\circ\text{C}10 ∘C
44 exam-style questions on OCR GCSE Physics 1.2 Changes of state, covering 1.2.1 Conservation of mass during changes of state, 1.2.2 Physical and chemical changes, 1.2.3 Heating, temperature and changes of state, 1.2.4 Specific heat capacity and specific latent heat, 1.2.5 Internal energy and temperature change, and 1.2.6 Energy transfer during a change of state. Each one has a worked solution and a mark scheme showing where the marks go.