The temperature of the glass surface of a 30 w lightbulb is


The temperature of the glass surface of a 30 W lightbulb is 75°C when the room temperature is 18°C. Estimate the temperature of a 150 W lightbulb with a glass bulb thesame size. Consider only radiation, and assume that 90% of theenergy is emitted as heat.

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Physics: The temperature of the glass surface of a 30 w lightbulb is
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