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14.2 Specific heat capacity and latent heat

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Question 28
F

A heater supplies 18000 J to a beaker and its water. The beaker gains 1200 J and 2800 J is transferred to the surroundings. The water has mass 0.20 kg and specific heat capacity 4200 J kg−1 ∘C−14200\ \mathrm{J\,kg^{-1}\,{}^\circ C^{-1}}4200 Jkg−1∘C−1. What is its temperature rise? Use ΔQ=mcΔθ\Delta Q=mc\Delta\thetaΔQ=mcΔθ.

[1]
A

18.1 ∘C18.1\ ^\circ\mathrm{C}18.1 ∘C

B

16.7 ∘C16.7\ ^\circ\mathrm{C}16.7 ∘C

C

21.4 ∘C21.4\ ^\circ\mathrm{C}21.4 ∘C

D

20.0 ∘C20.0\ ^\circ\mathrm{C}20.0 ∘C

Markscheme

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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