A simple pendulum consists of a small object with mass m = 1.91 kg and a massless string with length l = 1 m. Halfway down the string from the hanging spot, there is a peg which causes the string to bend. Find the period of this pendulum, in second.

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?