A water barometer was observed at a school on a recent trip. It was basically a tube, filled with water in a container. Then, one end of the tube had been sealed and a length of the tube was pulled upward until the height of fluid at the top showed vapor. If water has a mass of 62.4 lbm/ft3 and g = 32.174 ft/s2, and the top of the tube represents 0 lbf/in2 absolute, then at an atmospheric pressure of 14.696 psia, what is the height of the tube in feet?