At what velocity would a proton be traveling if it had the same kinetic energy as an electron traveling at 10.0% of the speed of light? KE = mu2,where m is the mass and u is the velocity; proton mass = 1.673 *10-27 kg; 
electron mass = 9.109 *10-31 kg; speed of light = 2.998 * 108 m/s
A) 4.89 *1011 m/s
B) 2.45 * 1011 m/s
C) 4.95 * 105 m/s
D) 7.00 * 105 m/s
E) 3.50 *105 m/s
Correct Answer:
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