A is 300 kpa, the volume flow rate of water at 10°c delivered to the tank is 0.0035 m3/s. if we want to reduce the flow rate in half, what should the valve opening (s/d) be? the pressure at a still r

A is 300 kpa, the volume flow rate of water at 10°c delivered to the tank is 0.0035 m3/s. if we want to reduce the flow rate in half, what should the valve opening (s/d) be? the pressure at a still remains at 300 kpa. check the velocity criterion (vmax = 3 m/s). is it violated? if so, provide some suggestions to avoid it.