What is the pressure head (of water) corresponding to a pressure of 810 kPa? What depth of mercury at 20◦C will be required to produce a pressure of 810 kPa? Find the pressure head in millimeters of...

What is the pressure head (of water) corresponding to a pressure of 810 kPa? What depth of mercury at 20◦C will be required to produce a pressure of 810 kPa?

Find the pressure head in millimeters of mercury (Hg) equivalent to 80 mm of water plus 60 mm of a fluid whose specific gravity is 2.90. The specific weight of mercury can be taken as 133 kN/m3 . Assume a temperature of 20◦C.