One kilogram of water in a frictionless piston-cylinder assembly undergoes an internally reversible, isentropic transformation from t_1 = 10 degree c, p_1 = 0.1mpa to t_2 = 90 degree c, and p_2 = 0.5 mpa. consider water as incompressible substance with constant specific heat, c = 4.211 kj/kg. k. assume that no phase transitions occur. determine: the heat transfer and the work for the process; the total entropy variation and entropy generation during the process.

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

Atypical jetliner lands at a speed of 146 mi/h and decelerates at the rate of (10.4 mi/h)/s. if the jetliner travels at a constant speed of 146 mi/h for 1.5 s after landing before applying the brakes, what is the total displacement of the jetliner between touchdown on the runway and coming to rest?

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?