Physics, 23.03.2021 17:10 hannahrasco4051

The filament of light bulb operates at 2000K it has a diameter of 0.80mm and is made of metal of emissivity 0.5. What is the length of filament is needed if the power of the ball is to be 100W. ( stefan's constant= 5.67×10^-8)

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The filament of light bulb operates at 2000K it has a diameter of 0.80mm and is made of metal of emissivity 0.5. What is the length of filament is needed if the power of the ball is to be 100W. ( stefan's constant= 5.67×10^-8)​

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The filament of light bulb operates at 2000K it has a diameter of 0.80mm and is made of metal of emissivity 0.5. What is the length of filament is needed if the power of the ball is to be 100W. ( stefan's constant= 5.67×10^-8)