The work that must be done to increase the speed of an electron (m = 9.11 *10-31 kg) from 0.90c to 0.95c is:
A) 2.6 * 10-13 J
B) 8.2* 10-13 J
C) 3.2 * 10-13 J
D) 7.4 * 10-14 J
E) 3.8 * 10-15 J
Correct Answer:
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