A power cycle generates 450 kJ of work, with a heat input of 2000 kJ at 420 K, and a heat loss of 1600 kJ at 300 K. Determine whether such a cycle is in keeping with the first and second laws of thermodynamics, and if the cycle is internally reversible, irreversible, or impossible.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

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.

Which of these is the best way to manage a natural resource