A 100-WW incandescent light bulb has a cylindrical tungsten filament 35.0 cm long, 0.41 mmmm in diameter, and with an emissivity of 0.28. What is the temperature of the filament? what wavelength does the spectral emittance peak?

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Chapter6: Photons And Matter Waves
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Problem 60P: The radiant energy from the sun reaches its maximum at a wavelength of about 500.0 nm. What is the...
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A 100-WW incandescent light bulb has a cylindrical tungsten filament 35.0 cm long, 0.41 mmmm in diameter, and with an emissivity of 0.28. What is the temperature of the filament? what wavelength does the spectral emittance peak? 

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