in 1923, the us army set a record for in-flight refueling of airplanes. using two refueling planes, an airco dh-4b biplane was able to remain in flight for 39 hours. during the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. assume the refueling nozzle had a diameter of 1.25 inches and each refueling took 2.43 min. to perform. what was the fluid speed v through each nozzle? [assume that the fluid filled the entire nozzle cross-section.]