A 22% sodium chloride solution is to be pumped up from a feed tank into a header tank at the top of a building. If the feed tank is 40m lower than the header and the pipe is 1.5cm in diameter, find (a) the velocity head of the solution flowing in the pipe, and (b) the power required to pump the solution at a rate of 8.1 cubic metres per hour. Assume that the solution is at10oC, pipeline losses can be ignored, the pump is 68 % efficient, and that the density of the sodium chloride solution is 1160kgm-3