A particle with a charge of 5.5 x 10-8C is fixed at the origin. A particle with a charge of -2.3 x 10-8 C is moved from x = 3.5 cm on the x axis to y = 4.3 cm on the y axis. The change in potential energy of the two-particle system is: 3.1 x 10-3 ) -3.1 x 10-3 J O 6.0x 10-5 J O -6.0 x 10-5 J O OJ
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