$5\mathrm{.}9$ Air flows steadily between two cross sections in a long,

straight section of $0\mathrm{.}1-m-$inside$-$diameter pipe. The static tempera$-$

ture and pressure at each section are indicated in Fig. P$5\mathrm{.}9.$ If the

average air velocity at section $(1)$ is $205\frac{m}{s},$ determine the average

air velocity at section $(2)\mathrm{.}5\mathrm{.}9$ Air flows steadily between two cross sections in a long,

straight section of $0\mathrm{.}1-m-$inside$-$diameter pipe. The static tempera$-$

ture and pressure at each section are indicated in Fig. P$5\mathrm{.}9.$ If the

average air velocity at section $(1)$ is $205\frac{m}{s},$ determine the average

air velocity at section $(2).$