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14.2 Specific heat capacity and latent heat

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Question 21

During one stage of a wash cycle, a washing machine heats 6.0 kg of water from 18 ∘C18\ ^{\circ}\text{C}18 ∘C to 48 ∘C48\ ^{\circ}\text{C}48 ∘C.

The specific heat capacity of water is 4200 J/kg ∘C4200\ \text{J/kg}\,^{\circ}\text{C}4200 J/kg∘C.

Calculate the increase in the thermal energy of the water.

Use the equation

ΔQ=m×c×Δθ\Delta Q = m \times c \times \Delta \thetaΔQ=m×c×Δθ

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14.2 Specific heat capacity and latent heat Questions

  1. GCSE
  2. /Physics
  3. /14.2 Specific heat capacity and latent heat

110 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.

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