What is it that people say to each other on among us after a match

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

Explain why electric current cannot exist if a current doesn't have a voltage source.

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?