Two liters of carbon dioxide gas contained in a piston-cylinder arrangement initially at 5 bar and 300 k, is compressed and it reaches a final temperature of 450 k during which the pressure-volume relationship is pv constant. assuming the ideal gas model for carbon dioxide, determine the following: 5 pts) a) final pressure, in bar b) mass of carbon dioxide, in kg c) work for the process, in kj d) heat transfer for the process, in kj

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)

Why do different substances have diffrent properties