Question

Three particles lie on the x axis: particle 1, with a charge of 1 x 10^–8 C is at x = 1 cm, particle 2, with a charge of 2 x 10^–8 C, is at x = 2 cm, and particle 3, with a charge of -3 x 10^–8 C, is at x = 3 cm. The potential energy of this arrangement, relative to the potential energy for infinite separation, is:

Answer 1

Solutions) V 03 + o i as 2 3 Y-> het q se=1 cm or reg 2cm = 1810-8c = 2x10-8c - 3X 1080 2 300 Org *3 il ) Patential evergy for the arra range ment لو ابيا be va Viz + Viz Viz + V23 -9 9 X10'x 10 K2 X 10 8 10 % where Vio . kov.02 12-21 1 x 102 or Vir = 18 x 10 55 V3 kov, 3 1x10-8 = (-3)X10 og (3-1)X102 H-X, V13 - - 5 13.5X10 J ~ 8 Oj 3 23 V23 kou a Izrxz Vz3 = GX109x 2x10&cm 33x10 (3-2) X102 54 *10-5 T S., V=118 18 13.5 J 54 ) X10 7 49.5 X 10 J

4 VE 4.95X10 J value This is required the 아 giren of the potential energy configuration.