The pump in the figure draws water from a well open to the atmosphere and discharges it into the atmosphere through a nozzle. Losses between points $1-2$ are $1m$ water and losses between $2-3$ are $1m$ water. Estimate the pump power in $kW$ delivered to the water $k\frac{g}{m^3}{}_{Hg}=13600k\frac{g}{m^3})(40$ points$).($can you solve it step by step? PLEASEEEEE$)$