What happens if heat flows into matter when no change of state is involved? a. both thermal energy and temperature increase b. both thermal energy and temperature decrease c. thermal energy decreases, temperature increases d. thermal energy increases, temperature decreases.

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?