1.

Find the velocity of an electron when its kinetic energy is equal to one electron volt (in 105m/s).Given charge of an electron e = 1.6 x 10-19 and mass of an electron m = 9.1 x 10-31.

A. 3.9
B. 4.9
C. 5.9
D. 6.9
Answer» D. 6.9


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