66. The temperature of the glass surface of a 60-W
Chapter 14, Problem 66(choose chapter or problem)
66. The temperature of the glass surface of a 60-W lightbulb is 65C when the room temperature is 18C. Estimate the temperature of a 150-W lightbulb with a glass bulb the same size. Consider only radiation, and assume that 90%. of the energy is emitted as heat.
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