The laser in an audio compact disc player uses light with a wavelength of 7.80 x 10-7 m. Calculate the frequency (F) of this light.  Calculate the energy (E) of a single photon of this light.

Chemistry by OpenStax (2015-05-04)
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Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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Chapter6: Electronic Structure And Periodic Properties Of Elements
Section: Chapter Questions
Problem 6E: Heated lithium atoms emit photons of light with an energy of 2.9611019 J. Calculate the frequency...
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The laser in an audio compact disc player uses light with a wavelength of 7.80 x 10-7 m. Calculate the frequency (F) of this light.  Calculate the energy (E) of a single photon of this light.  

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Every light with a wavelength have an associated frequency and energy value.

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