Homework Help: chemistry

Posted by osa on Wednesday, November 11, 2009 at 1:12pm.

An argon ion laser puts 5 W of continuous power at a wavelength of 532 nm. the diameter of the laser beam is 5.5 nm. if the laser is pointed at an object, how many photons of laser will strike the object per second.|(1W=1Js-1).

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