Tuesday
January 27, 2015

Homework Help: college chemistry

Posted by kat on Sunday, February 17, 2013 at 8:50pm.

Assuming that 9.0\% of the energy output of a 65W lightbulb is visible light and that the average wavelength of the light is 550 {\rm nm}, how many photons are emitted by the lightbulb each second?

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