Problem $1$

A bio$-$artificial liver has a plasma flow of $900m\frac{l}{m}in$ through a hollow fiber unit that contains

hepatocytes on the shell side. The hollow fiber unit contains $9,000$ fibers. The fiber length is $75$

$cm$ and the inside diameter of the fibers is $300$ microns. What is the pressure drop across each

fiber in $mmHg?(1$ atm $\{$:$=101,325\frac{N}{m^2}=760mmHg$;$=1\frac{g}{m*s})$