[问答题]
Two positive point charges are a fixed distance p gj(nu1ap)m(s )uu 3qapart. Tooiedgmtm2, vz ucs6k )49+x; he sum of their charges is What chargei4t6)csm dxezv9om+; 2 u,kog must each have in order to
(a) maximize the electric force between them,
(b) minimize it?
