He laser in most supermarket barcode scanners operates at

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he laser in most supermarket barcode scanners operates at awavelength of 632.8 nm. What is the energy of a single photonemitted by such a laser? What is the energy of one mole of these photons?

The electron binding energy for copper metal is 7.18 x10-19 J. Find the longest wavelength of light that couldeject electrons from copper in a photoelectric effect experiment.

Reference no: EM13635146

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He laser in most supermarket barcode scanners operates at : he laser in most supermarket barcode scanners operates at awavelength of 632.8 nm. what is the energy of a single

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