Which statements accurately describe the waste generated by nuclear reactions? check all that apply. it is hazardous for hundreds to thousands of years. some waste can be recycled and used again. it is hazardous to living organisms forever. some waste can be completely transformed into energy. it is not hazardous after a couple of years.

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)