Physics

Problem

A glass pane of thickness

0.40\,\text{cm}

and area

0.60\,\text{m}^2

separates indoor air at

20^\circ\text{C}

from outdoor air at

5^\circ\text{C}

. The thermal conductivity of glass is

0.80\,\text{W m}^{-1}\,\text{K}^{-1}

. Calculate the rate of heat flow through the pane.