How much work must be done to increase t...

How much work must be done to increase the speed of an electron (a) from 0.18c to 0.20c and (b) from 0.97c to 0.99c? Note that the speed increase is 0.01c in both cases.

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The correct Answer is:

(a) 2.1 keV; (b) 1.5 MeV

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