An extreme skier, starting from rest, coasts down a mountain slope that makes an angle of 25.0° with the horizontal. the coefficient of kinetic friction between her skis and the snow is 0.200. she coasts down a distance of 8.7 m before coming to the edge of a cliff. without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 4.20 m below the edge. how fast is she going just before she lands

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?