A water tank of diameter (D) is being drained through a smooth nozzle of diameter (d) at a volume discharge (Q). The velocity of water leaving the nozzle can be calculated by V = 2gH where (H) is the depth of water in the tank. 4 D Problem (7): Given the values of d [cm] and H [cm], calculate Q in [Lit/s]. H d V = 2gH Problem (8): Given the values of Q [Lit/s] and D [cm], calculate the rate at which the water depth in the tank drops (dh/dt) in [um/s]. Smooth Nozzle