1.An airplane is flying at 10 km altitude in a U.S. standard atmosphere. If the internal pressure of the aircraft interior is 100 kPa, what is the outward force on a window? the window is flat and has an elliptical shape wiht lengths of 300 mm along the major axis and 200 mm along the minor axis.
2.Water flows in a 100 m long pipe at 3 m/s. If the water temperature is 20 degrees C, determine the minimum valve-closure time to avoid creating water hammer pressures. What is the maximum water-hammer pressure that can occur? How is this pressure affected if the water temperature drops to 10 degrees C