QUESTION $4$

A certain liquid has a specific gravity of $0\mathrm{.}785$ and flows into pipe $1$ at a flow rate of $8\mathrm{.}35\frac{m^3}{h}$ as depicted in Figure $4.$ The liquid emerges at pipe $3$ and divides equally. The steel pipes are schedule $40$ pipe. Calculate:

$4\mathrm{.}1$ The total mass flow rate in pipe $1$ and pipes $3.$

$4\mathrm{.}2$ The average velocity in pipe $1$ and pipes $3.$

$(4)$

$4\mathrm{.}3$ The mass velocity in pipe $1.$