A prankster has added oil, of specific gravity SGo, to the left leg of the manometer at right. Nevertheless, the U- tube is still to be used to measure the pressure in the air tank. (a) Find an expression for h as a function of H and other oil, parameters in the problem. (b) Find the special case of your result when ptank = pa. (c) Suppose H = 5 cm, pa = 101.2 kPa, SGo = 0.85, and plank is 1.82 kPa higher than pa. Calculate h in cm, ignoring surface tension and air density effects. water Air tank: Punk