Work is done against frictional forces acting on the wheels of the suitcase. Describe the effect this has on the temperature of wheels. Explain this in terms of energy transfer.

An uncharged nonconductive hollow sphere of radius 18.0 cm surrounds a 12.0 µc charge located at the origin of a cartesian coordinate system. a drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. calculate the electric flux through the hole.

What is the coefficient of kinetic friction μk between the block and the tabletop?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?