A4 ft high, 3 ft diameter cylindrical water tank whose top is open to the atmosphere initially filled with water. now the discharge plug near the bottom of the tank is pulled nd a water jet whose diameter is 0.5 in streams out. the average velocity of the jet air is approximated as v = (2gh)^1/2, where h is the height of the water in the tank measured from the hole (a variable) and g is the gravitational acceleration. determine how long it takes for the water level in the tank to drop to 2 ft from the bottom.