A jet aircraft flies 30,000 feet above the ground at Mach 0.95. The air pressure and temperature are 30. kPa and -30.°C. The pressure ratio across the engine's compressor is 13, and the temperature at the turbine inlet is 1200°C. 60. kg/s of air enters the engine. Calculate

(a) the velocity of exhaust gasses

(b) the thrust the engine is producing [41 kN]

(c) the mass of jet fuel burned per second. Assume the jet fuel has a heating value of 45 MJ/kg