Suppose the air pressure outside a conventional jet airliner flying at an altitude of 10 km is 250 mb. Further, suppose the air inside the aircraft is pressurized to 1000 mb. If the outside air...

Suppose the air pressure outside a conventional jet airliner flying at an altitude of 10 km is 250 mb. Further, suppose the air inside the aircraft is pressurized to 1000 mb. If the outside air temperature is –50°C, what would be the temperature of this air if brought inside the aircraft and compressed at the dry adiabatic rate to a pressure of 1000 mb? (Assume that a pressure of 1000 mb is equivalent to an altitude of 0 m.)