You want to find the force exerted on an undersea pipeline by a $10 \mathrm{mph}$ current flowing normal to the axis of the pipe. The pipe is $30 \mathrm{in}$. in diameter, and the density of seawater is $64 \mathrm{lb}_{\mathrm{m}} / \mathrm{ft}^{3}$ and its viscosity is $1.5 \mathrm{cP}$. To determine this, you test a $1 \frac{1}{2} \mathrm{in}$ ineter model of the pipe in a wind tunnel at $60^{\circ} \mathrm{F}$. What velocity should you use in the wind tunnel in order to scale the measured force to the conditions in the sea? What is the ratio of the force on the pipeline in the sea to that on the model measured in the wind tunnel?