$(1)$ Flow along an cheline plene. $($This is the basictool$)$

Show that for a film flowen down a plane with an

angle $$ the flow noter is gives by:

$Q=\frac{g{}^{3}Wcos}{3}$

by $(1)$ Show the shien dustraburiosi

$(2)$ Assuming rectilimea flow and a newterman

fluid find the velocaty distrubuteus $v(x)$

$(3)$ Derive the equaturn given abure

$(4)$ Relote the thickmens $t_0$ the flow per un't

wilth

In all coses $,,$ are known

Use the informotion above to solve the flollowing

problems