A plastic strip having a width of $0\mathrm{.}2$ m and a mass of $150$ g passes

between two layers A and $B$ of paint, as shown in $($Figure $1).$ Force of

$P=2\mathrm{.}2N$ is applied to the strip, causing it to move at a constant speed

of $6m\frac{m}{s}.$ Neglect any friction at the top and bottom openings, and

assume the velocity profile through each layer is linear.

igure

Part A

Determine the viscosity of the paint.

Express your answer using three significant figures and include the appropriate units.