A. A U-tube of diameter 20.59mm contains 333millilitres of water. If the maximum displacement from the equilibrium position is 0.1m determine the period of oscillation and the maximum fluid velocity. Neglect friction B. A valve at the outlet end of a pipe 2.4m in diameter and 3000m long is rapidly opened. The pipe discharges to the atmosphere and piezometric head at the inlet end of the pipe is 20m relative to the outlet level. The head loss through the open valve is 16 times the velocity head in the pipe, other minor losses amount to thrice the velocity head and f = 0.03. What is the velocity after 100s and what is the time needed for flow to be established?