$2.$ A water column is attached at the bottom to a tube with a flow restriction $($symbolized by the x $)$ in it$.$ The pressure of the fluid before that flow restriction is $200$ Pa $($above atmospheric pressure$),$ and just atmosphere at the outlet. The flow through the restriction is $\backslash (10^\{-6\}\backslash$mathrm$\{$~m$\}^\{3\}/\backslash$mathrm$\{$sec$\}\backslash ).$

Part a

Part b

a$.$ What is the fluid resistance $\backslash ($ R $\backslash )$ of the restriction? You may wish to recall that $\backslash (\backslash$Delta P$=$f R $\backslash ).$

b$.$ A second tube and restriction identical to the first $($and at the same height$)$ is added as shown. $($This configuration is called parallel.$)$ Now what is the total fluid flow?

c$.$ What is the effective fluid resistance of the two restrictions together in parallel? $($This should follow from part $\backslash ($ a $\backslash )$ and $\backslash ($ b $\backslash )$ and the definition of flow resistance, not from some rule you may have learned earlier from a different class.$)$