Determine the length of time needed to transfer 0.8x106 J of energy through a 6.0 m² pane of glass if the temperature on one side is 30°C and is 15°C on the other side. The thermal conductivity constant for the glass is k = 8.1x10³ J/sm°C and the glass is 0.007 m thick. A. 3.0 hours B. 2.8 hours

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Chapter14: Heat And Heat Transfer Methods
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7.
Determine the length of time needed to transfer 0.8x106 J of energy through a 6.0 m²
pane of glass if the temperature on one side is 30°C and is 15°C on the other side. The
thermal conductivity constant for the glass is k = 8.1x103 J/sm°C and the glass is
0.007 m thick.
A. 3.0 hours
B. 2.8 hours
C. 2.3 hours
D. 2.1 hours
Transcribed Image Text:7. Determine the length of time needed to transfer 0.8x106 J of energy through a 6.0 m² pane of glass if the temperature on one side is 30°C and is 15°C on the other side. The thermal conductivity constant for the glass is k = 8.1x103 J/sm°C and the glass is 0.007 m thick. A. 3.0 hours B. 2.8 hours C. 2.3 hours D. 2.1 hours
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