Assume a lightbulb converts all of its energy to green light (this is not true, some is lost as heat). If the lightbulb is 60W, how many photons would it produce in 60s? Assume a wavelength for green light of 532nm. Hint: replace f in the photon energy equation with c/lambda

Principles of Physics: A Calculus-Based Text
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Chapter31: Particle Physics
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Assume a lightbulb converts all of its energy to green light (this is not true, some is lost as heat). If the lightbulb is 60W, how many photons would it produce in 60s? Assume a wavelength for green light of 532nm. Hint: replace f in the photon energy equation with c/lambda

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