A Windowpane Is Half a Centimeter Thick and Has an Area

Multiple Choice

A windowpane is half a centimeter thick and has an area of 2.0 m².The temperature difference between the inside and outside surfaces of the pane is 15°C.What is the rate of heat flow through this window? (Thermal conductivity for this glass is 0.84 W / m ·°C. )

A) 5000 J/s
B) 2500 J/s
C) 1300 J/s
D) 630 J/s