Eight people are involved in a tug-of-war. the blue team members pull the rope with the forces of 220 n, 340 n, 180 n, and 560 n. three members of the red team pull it with the forces of 250n, 160 n, and 420 n. with what force must the fourth person pull the rope to maintain equilibrium?

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?