The force of +q on -aq separated at 3 cm= F=k(q1q2)/r2, where r= 5 cm,
F= 9*109*(5*5*7.50)/0.052=675 N,
F2= 9*109(5*5*7.50)/0.032=1875 N
total force= F1+F2= 675+1875= 2550 N
Two identical 1.00 g insulating balls with equal charges hang on 21.0 cm long strings as...
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