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What is the Speed...

What is the
Speed

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Given, `KE = 120 eV, m = 9.1xx10^(-3)kg, e = 1.6xx10^(-19)c`
`upsilon = (p)/(m) = (5.91xx10^(-24))/(9.1xx10^(-31))=6.5xx10^(6)m//s`
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