Four identical conducting spheres mounted on dry ice pucks are held on a smooth

Four identical conducting spheres mounted on dry ice pucks are held on a smooth level at the four corners of a square. Two of them carry a charge of +q and the other two carry a charge of-q.
A) Make a vector diagram to scale showing the electric forces on sphere 1.
B.) If all the pucks are released at the same time in which direction will each of them move?
+q(#1)______D1_______-q(#2)
-q(#3)______D2_______+q(#4)
Question#2
Two equally charged identical conducting spheres A and B repel each other with a force of 2.0 *10^-5 newton.
Four identical conducting spheres mounted on dry ice pucks are held on a smooth level at the four corners of a square. Two of them carry a charge of +q and the other two carry a charge of-q.
A) Make a vector diagram to scale showing the electric forces on sphere 1.
B.) If all the pucks are released at the same time in which direction will each of them move?
+q(#1)______D1_______-q(#2)
-q(#3)______D2_______+q(#4)
Question#2
Two equally charged identical conducting spheres A and B repel each other with a force of 2.0 *10^-5 newton. Another identical uncharged sphere C is touched to A and then moved over right next to B.
What is the electric force on A now?
What is the net electric force on C (after it has touched A) when it is halfway between A and B?
A______________B
A______________B
C
A______________B
C
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