In an X-ray tube, high-speed electrons are slammed into a lead target, giving off X-rays. If the electrons are accelerated from rest through a potential difference of 100,000 volts, what speed do they have when they strike the target? (qe = 1.6 *10 - 19 C, me = 9.11 *10 - 31 kg, and c = 3.00 108 m/s)
A) 0.17c
B) 0.41c
C) 0.91c
D) 0.55c
Correct Answer:
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