Question

calculate the rest energy of an electron MeV​

Answer 1

Answer:

According to Einstein's mass-energy equivalence theory, E

0

=m

0

c

2

where E

0

is the rest mass energy,

m

0

=9.11×10

−31

kg be the rest mass of the electron and c be the velocity of light.

So, E

0

=(9.11×10

−31

kg)×(3×10

8

m/s)

2

=8.19×10

−14

J

E

0

=

1.6×10

−19

8.19×10

−14

eV=0.511×10

6

eV=0.511MeV

(note: 1eV=1.6×10

−19

J)

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Answer 2

ANSWER:

0.5110 MeV.

EXPLANATION:

THE REST ENERGY OF AN ELECTRON IS 0.05110 MeV