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How many photons with 10 ev are required to produce 20 joules of energy?
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How many photons with 10 ev are required to produce 20 joules of energy?

User Onurmatik
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1 Answer

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1 joule = 6,242e+18ev

20 joule = 20 joule *6,242e+18 ev/joule =1,248e+20 ev

1,248e+20 ev / (10 ev / photon) =1,248e+19 photons.



User Andrei Cusnir
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