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Home Q & A Board Science-Related Homework Help Physics
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riot625 riot625
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11 years ago
How many photons of infrared radiation with a frequency of 5.18 multiplied by 1013 Hz are required to provide an energy of 1.02 J?
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#1
11 years ago
the energy of a photon = h v where h is planck's constant and = 6.63x10^-34Js

therefore the energy of one photon of this energy = 6.63x10^-34Js x 5.18x10^13Hz

energy of one photon = 3.43x10^-20 J

number of photons = 1.02J / 3.43x10^-20J/photon = 2.97x10^19 photons
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