Quelpr
7 marksHeat Transfer

CAPE Physics Unit 1 · 2004 · Paper 2 · Question 8(b)

Figure 6 shows a furnace emitting radiation through a hole of area 1.0 cm². The radiation is absorbed by a pyrex beaker of mass 20 g containing 50 g of water and 30 g of ice in equilibrium. The furnace temperature is 1500°C and the specific heat capacity of pyrex is 840 J kg⁻¹ K⁻¹.

Calculate the time it will take for the beaker and its contents to be heated through 20°C.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 8(a)(i)State and explain the processes by which a hot body can lose heat to the surroundings.[8 marks]
  2. 8(a)(ii)Explain the terms 'specific heat capacity' and 'specific latent heat' of fusion of a material.[1 mark]
  3. 8(c)(i)Calculate the specific latent heat of fusion of the material.[5 marks]
  4. 8(c)(ii)Calculate the specific heat capacity of the material in the liquid phase.[1 mark]

More practice: the rest of this paper · more Heat Transfer questions · all CAPE Physics Unit 1 past papers