Calculate the rate of heat flow through a glass window pane of area and thickness…

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics

Problem

Calculate the rate of heat flow through a glass window pane of area

0.5\,\text{m}^2

and thickness

5\,\text{mm}

when the inner surface is at

20^{\circ}\text{C}

and the outer surface at

5^{\circ}\text{C}

. (Thermal conductivity of glass

k = 0.8\,\text{W m}^{-1}\text{K}^{-1}

.) (a)

6.0\times10^{2}\,\text{W}

(b)

6.0\times10^{3}\,\text{W}

(c)

1.2\times10^{3}\,\text{W}

(d)

2.0\times10^{3}\,\text{W}