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Introductory Physics Homework Help
De Broglie Wavelength Calculation for an Electron with 120 eV Energy
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[QUOTE="bennyq, post: 4897220, member: 506392"] [h2]Homework Statement [/h2] Calculate the de Broglie wavelengths of an electron with energy 120 eV ...[h2]Homework Equations[/h2] lambda = h\p where p = sqrt(2*Me*E) [h2]The Attempt at a Solution[/h2] E=1.6E-19*120ev.. Then sub into equation and I get 1.1E-10m for the wavelength, which is the answer quoted. The question that concerns me is why can you not use E=hf, where rearranged gives lambda=(hc/E) which gives a different answer... Thanks [/QUOTE]
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Introductory Physics Homework Help
De Broglie Wavelength Calculation for an Electron with 120 eV Energy
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