$1\mathrm{.}5$ For this problem, refer to Examples $2-1,2-2,$ and $2-3$ on pages $46-51$ in your textbook.

$($a$)$ In Example $2-1($p$.46),$ what is the goal of the calculation?

$($b$)$ What would the result of the calculation be if $F_{A0}$ were reduced to one$-$half of the amount given in Ex$.2-1?$

$($c$)$ In Example $2-2($p$.47),$ what is the goal of the calculation?

$($d$)$ What would the result of the calculation be if $F_{A_0}$ were increase to double the amount given in Ex$.2-2?$

$($e$)$ In Example $2-3($p$.50),$ what is the goal of the calculation?

$($f$)$ Would the qualitative results of the calculation in Ex$.2-3$ change if the entering volumetric flow were changed? Explain your answer.