An object undergoing simple harmonic motion takes 0.13 s to travel from one point of zero velocity to the next such point. The distance between those points is 41 cm. Calculate (a) the period, (b) the frequency, and (c) the amplitude of the motion.

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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?