in a vertical pipe conveying water, presure gages are inserted at A and B,Where the Diameters are 15 cm and 7.5 cm respctively. The point B is 2.4m below A, and when the rate of the flow down the pipe is 0.021 cubic meter per sec, the pressur at B is 0.12 kg/cm2 greater than that at A. Assuming that the Losses in the pipe between A and B can be expressed as K times the velocity head at A, find the value of K. if the gages at A and B are replaced by tubes filled with water and connected to a U-tube containing mercury of specific gravity 13.6 calculate the value of the reading on the manometer