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The Velocity of an Electron Is Changed from C/2 in the -X

Question 21

Multiple Choice

The velocity of an electron is changed from c/2 in the -x direction to c/2 in the +x direction. As a result, its kinetic energy changes by:


A) mc2
B) 0.5mc2
C) The velocity of an electron is changed from c/2 in the -x direction to c/2 in the +x direction. As a result, its kinetic energy changes by: A)  mc<sup>2</sup> B)  0.5mc<sup>2</sup> C)    D)  2mc<sup>2</sup> E)  zero
D) 2mc2
E) zero

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