A $250-mm-$diameter horizontal oil pipeline extends $7km,$ connecting two large open reservoirs having the same level. If friction in the pipe creates a head loss of $2m$ for every $100m$ of pipe length, determine the power that must be supplied by a pump to produce a flow of $6\frac{m^3}{m}in$ through the pipe. The inlet of the pipe is submerged in the one reservoir and the exit is just above the surface of the other reservoir. Take ${}_0=880k\frac{g}{m^3}.$