$1.($Chapter $6)$ Water at $\backslash (20^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash )$ is to be pumped through $600$ m of pipe from reservoir $1$ to $2$ at a rate of $\backslash (0\mathrm{.}15\backslash$mathrm$\{$~m$\}^\{3\}/\backslash$mathrm$\{$s$\}\backslash ),$ as shown in Fig. $1.$ If the pipe is cast iron of diameter $150$ mm and the pump is $75$ percent efficient, what power pump is needed? Consider surface roughness and neglect minor losses. The reservoirs are so large that the velocity on the free surface is negligible. Answer in Watts