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OpenStudy (anonymous):
A 250MW laser pulse is focused with a lens to a diameter of 3.0μm . Part A is asking for R? I got the correct answer of 1.6E11 m. Part B is this...What is the ration of the laser beam's electric field to the electric field that keeps the electron bound to the proton of a hydrogen atom? The radius of the eletron's orbit is 0.053 nm. It is asking for Eo/E=? answer has no units.
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