CAPE Physics Unit 1 · 2014 · Paper 2 · Question 6(b)(iii)

The thermal conductivity of the brick is 0.48 W m⁻¹ K⁻¹ and that of the foam is 0.016 W m⁻¹ K⁻¹.

Determine the rate at which heat energy would pass through each square metre of this composite wall.