The temperature of the glass surface of a 75-W lightbulb
Chapter 14, Problem 62(choose chapter or problem)
The temperature of the glass surface of a 75-W lightbulb is 75C 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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