Amanometric liquid of unknown density is used in two manometers: a sealed-end one, and one across an orifice in a pipe through which cooking oil circulates, as shown in figure 3. see figure below. the cooking oil specific gravity is 0.78 and the atmospheric pressure is 758 [mm hg). , determine the following: (a) the density of the manometric liquid, in [kg/m3]. (b) the absolute pressure in point (b), in [psia], if the gauge pressure there is 20.0 [psig]. (c) the pressure drop between points (a) and (b), in (mm hg). (d) could you guess what the manometric liquid is? 16) consider a scuba diver descending in seawater to a depth of 150 [m]. the viewing window in the diver's diving suit has an area of roughly 65 [cm2]. the pressure on the inside of the suit should be maintained at 1 [atm]. take the specific gravity of the seawater to be 1.05. (a) what would be the seawater pressure, in [mpa], at that depth? (b) what force in [n] would the window have to withstand?