Name three ways you could increase the strength of an
electromagnet:

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

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?