Asked by Anonymous
The filament of a 60W lightbulb is at 2.8kK.
What's the surface area of the filament?
What's the surface area of the filament?
Answers
Answered by
bobpursley
find the energy/area at2800K.
http://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law
but energy=60w
solve for area
http://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law
but energy=60w
solve for area
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