Short Answer
Consider a light bulb, in empty space, radiating 200. watts with its filament heated to 2800.°C. Assuming it is a good approximation to a black body.
(a) What is the area of the filament?
(b) If placed in an oven, with walls at 800.°C, what is its net power radiated now?
Correct Answer:
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(a) 39.6 m...View Answer
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