A 100 W heater warms a 0.50 kg metal sensor housing for 3.0 min. The temperature of the housing rises by 40 ∘C40\ ^\circ\mathrm{C}40 ∘C. All the energy from the heater is transferred to the housing. What is the specific heat capacity of the metal? Use E=PtE=PtE=Pt and E=mcΔθE=mc\Delta\thetaE=mcΔθ.
15 J kg−1 ∘C−115\ \mathrm{J\,kg^{-1}\,{}^\circ C^{-1}}15 Jkg−1∘C−1
900 J kg−1 ∘C−1900\ \mathrm{J\,kg^{-1}\,{}^\circ C^{-1}}900 Jkg−1∘C−1
450 J kg−1 ∘C−1450\ \mathrm{J\,kg^{-1}\,{}^\circ C^{-1}}450 Jkg−1∘C−1
225 J kg−1 ∘C−1225\ \mathrm{J\,kg^{-1}\,{}^\circ C^{-1}}225 Jkg−1∘C−1
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.