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The K.E. of electron is 10 keV. Calculat...

The K.E. of electron is 10 keV. Calculate its speed.

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`v=((2KE)/(m))^((1)/(2))" i.e. "v=((2xx10xx10^(3)xx1.6xx10^(-19))/(9.1xx10^(-31)))^((1)/(2))=((3.2)/(9.1))^((1)/(2))(10^(16))^((1)/(2))`
`v=0.5xx10^(8)ms^(-1)`.
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