jrock1226 jrock1226

06-07-2016
Mathematics

contestada

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

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Edufirst Edufirst

14-07-2016

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.

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