QUESTION $2$

Which of the following is correct?

This data was obtained from the postlab extra information.

See image below

See image below

Postlab Additional Informatior

The postlab questions were written using the data given below:

Re range $5000-19,500$

$=0\mathrm{.}160R{e}^{0\mathrm{.}638}P{r}^{\frac{1}{3}}$

$19,500-100,000$

$=0\mathrm{.}0385R{e}^{0\mathrm{.}82}P{r}^{\frac{1}{3}}$

Mass of tube, $m=0\mathrm{.}05kg$

Surface Area tube, $A_s=4\mathrm{.}8{10}^{-3}{m}^2$

Specific heat capacity of copper, $c=383\frac{J}{k}gC$

Diameter of tube, $d$ or $D=0\mathrm{.}022m$

Thermal conductivity of air, $k_a=2\mathrm{.}57{10}^{-2}\frac{W}{m}C$