An aircraft flies at an airspeed of 280 mph with a rate of climb of 3500 ft/min through a vertical stationary cold front. The instruments on board the aircraft show that the air temperature drops at a rate of 1.2 oF/min. What is the rate of change of the air temperature (oF/mile) with respect to the horizontal difference through the cold front seen by an observer on the ground?

An aircraft flies at an airspeed of 280 mph with a rate of climb of 3500...