Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature Tand rejects to its sink at temperature T2. For what value of T the efficiencies of the two engines are equal

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

Is the time in tennessee the same as florida

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?