P22_034.PDF

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Chapter 22 - 22.34
34. Let the two charges be q 1 and q 2 .Then q 1 + q 2 = Q =5 . 0
×
10 5 C. We use Eq. 22-1:
1 . 0N=
8 . 99
×
10 9 N · m 2
C 2
q 1 q 2
.
(2 . 0m) 2
q 1 and solve for q 1 using the quadratic formula. The two roots obtained are the
values of q 1 and q 2 , since it does not matter which is which. We get 1 . 2
×
10 5 Cand3 . 8
×
10 5 C.
We substitute q 2 = Q
 
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