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14.2 Specific heat capacity and latent heat

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Question 15

Two solid thermal buffers, R and S, are tested for use in a temperature-control system. They are made from the same material. Each buffer contains an electric heater that operates at constant power. All the energy supplied by each heater is transferred to its buffer. Neither buffer changes state.

thermal buffermass in kgheater power in Wheating time in minutes
R1.20758.0
S0.80506.0

Calculate the ratio of the temperature rise of R to the temperature rise of S.

Use ΔQ=mcΔθ\Delta Q=mc\Delta\thetaΔQ=mcΔθ.

[3]
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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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