N outer space two identical spheres are connected by a taut steel cable, and the whole apparatus rotates about its center. The mass of each sphere is 42 kg. The distance between centers of the spheres is 4.5 m. At a particular instant the velocity of one of the spheres is <0, 11.0, 0> m/s and the velocity of the other sphere is <0, -11.0, 0> m/s. What is the tension in the cable

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?