To make ice, a freezer that is a reverse carnot engine extracts 37 kj as heat at -17°c during each cycle, with coefficient of performance 5.8. the room temperature is 26.9°c. how much (a) energy per cycle is delivered as heat to the room and (b) work per cycle is required to run the freezer?

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

The dot diagram represents the motion of the motorcycle as it moves from left to right

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?