The lockheed u-2 was designed for high altitude strategic reconnaissance over hostile terri….ok, russia. the u-2 has a wing area of 565 ft^2 and a span of 80 ft. assuming a parasite drag coefficient of 0.015 and an oswald’s efficiency of 90% calculate:
(a) how far, in miles, the u-2 could glide to sea level after a complete engine failure at 80,000 ft?
(b) how long would it take in hours (seconds)?

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.