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this is another one S 20.5 A fluorescent light bulb, rated at 100 W, is illuminated in air at 25 C and atmospheric pressure. Under

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S 20.5 A fluorescent light bulb, rated at 100 W, is illuminated in air at 25 C and atmospheric pressure. Under these conditions the surface temperature of the glass is 140 C. Determine the rate of heat transfer from the bulb by natural convection. The bulb is cylindrical, having a diameter of 35 mm and a length of 0.8 m, and is oriented horizontally. m nu 3/5

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