Air at 10°C enters a turbojet engine at a rate of 18 kg/s and at a velocity of 330 m/s (relative to the engine). Air is heated in the combustion chamber at a rate 16,000 kJ/s and it leaves the engine at 450°C. Determine the thrust produced by this turbojet engine. Show whether the thrust force will be doubled if the heating in the combustion is doubled