$4\mathrm{.}2$ Given a fluid with an absolute viscosity $$ between two $1-m^2$ surfaces spaced $1$ mm apart, find how fast the surfaces will move relative to each other if a $10-N$ force is applied in the direction of the surfaces when $$ is

$($a$)0\mathrm{.}001N*\frac{s}{m^2}($water$)$

$($b$)0\mathrm{.}100N*\frac{s}{m^2}($a thin oil at room temperature$)$

$($c$)10\mathrm{.}0N*\frac{s}{m^2}($syrup; cold oil$)$

$($d$){10}^{8}N*\frac{s}{m^2}($asphalt$)$