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A 1500 W portable heater is needed to replace the heat lost through a circular window in the wall of a home. The window is made of a single pane of glass 0.30 cm thick. The thermal conductivity for the glass is 0.63 W/(m·K). The temperature inside the house is 20 oC and outside is −12 oC. What is the radius of the window?



47 cm



53 cm



27 cm



7.1 cm



84 cm

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College Physics

College Physics


Edition: 5th
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eggr0lleggr0ll
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this is exactly what I needed
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