What is the relativistic kinetic energy of an electron moving at a speed of 2.00 * 108 m/s? (electron mass is 9.11 *10-31 kg and c = 3.00 * 108 m/s)
A) 2.80 *10-14 J
B) 1.27 * 10-14 J
C) 11.6 *10-14 J
D) 9.47 *10-14 J
Correct Answer:
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