A capillary tube has an 8 mm diameter through which liquid fluorine refrigerant R-11 flows at a rate of 0.03 cm^3/s. The tube is used as a throttling device in an air conditioning unit. A model of this flow is constructed by using pipe of 3 cm inside diameter and water as the fluid medium. Conditions are atmospheric pressure and 25C. Viscosity and specific gravity for fluorine are 0.42x10^3 N.s/m^2 and 1.48 respectively. For dynamic similarity between the two, Reynolds numbers must be identical. What is the required velocity in the model for dynamic similarity?