A Windowpane Is Half a Centimeter Thick and Has an Area

question 51

Multiple Choice

A windowpane is half a centimeter thick and has an area of 0.9 m².The temperature difference between the inside and outside surfaces of the pane is 14 °C.What is the rate of heat flow through this window? (Thermal conductivity for glass is 0.84 J/s⋅m⋅°C. )
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• A) 4,200 J/s
• B) 2,100 J/s
• C) 2,500 J/s
• D) 1,510 J/s
• E) ​1,800 J/s

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