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An electron beam energes from an acceler...

An electron beam energes from an accelerator with kinetic energy 100eV. What is its de-Broglie wavelength?
`[m = 9.1 xx 10^(-31)kg, h = 6.6 xx 10^(-34)Js, 1eV = 1.6 xx 10^(-19)J]`

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