[问答题]
Two positive point ck fdw3(o p.n6pharm lm j+ sdm+t9u2 g:3/htbb)arges are a fixed distance apart. The sum of their charges is What char+m/ dt3tbljbg s:mmh)92+a urge must each have in order to
(a) maximize the electric force between them,
(b) minimize it?
