An ideal reversible engine takes 5 points 3200 J of heat from a reservoir at 550 K and emits some heat to a reservoir at 350 K. How much work can the engine do and how much heat is discarded, and what is its efficiency? What is the total entropy change during one cycle?

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.