a electron of rest mass is 9.11*10^-31kg moves with a speed of 0.8c.What is its kinetic energy
Bhuvanesh Kumar , 6 Years ago
Grade 12
Modern Physics> a electron of rest mass is 9.11*10^-31kg ...
1 Answers
Arun
Last Activity: 6 Years ago
rest mass energy is mc^2
where m is rest mass of electron
kinetic energy due to movement will be given as,
[mc^2 / sqrt (1 – v^2 / c^2)] – mc^2
we know v = 0.8c
by putting values,KE = 5.466 * 10^-14 J
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