A wooden board of thickness and area separates air at from air at

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A wooden board of thickness

2.0\,\text{cm}

and area

0.50\,\text{m}^2

separates air at

25\,^{\circ}\!\text{C}

from air at

60\,^{\circ}\!\text{C}

. The wood’s thermal conductivity is

0.80\,\text{W}/(\text{m}\cdot\text{K})

. Calculate the steady-state rate at which thermal energy passes through the board.