tungsten filament in an old lightbulb has an area of 3.001 10 6 m 6 .
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tungsten filament in an old lightbulb has an area of 3.001 × 10–6 m6. The bulb operates at a power of 10.0 W. Take the emissivity of the filament to be 0.40. You can ignore the temperature of the environment. What is the temperature of the filament?
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