Air and fuel enter a turbojet engine (turbine) having an enthalpy of 800 kJ/kg and arelative velocity is 15 m/s. The mixture exits with a relative velocity of 60m/s and an enthalpy of 650 kJ/kg. The mass flow rate is 30 kg/s, and the rate of heat loss is 1.5 kJ/s. what is the power output of the engine?

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature