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Physics 10 Online
OpenStudy (anonymous):

How many photons are produced in a laser pulse of 0.849 J at 471 nm?

OpenStudy (anonymous):

Around \[2.01303767 * 10^{18}\] Using the relation \[E = \frac{ hc }{ wavelength }\] energy of a photon at wavelength 4.71x10^-7 m, is 4.21750676 x10^-19 J Divide 0.849J by this, you get 2.01303767x10^18.

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