pressurized vessel contains water with some air above it, as shown below. A multi-fluid manometer system is used to determine the pressure at the airwater interface, point F? h1 = 0.24 m, h2 = 0.35 m and h3 = 0.52 m Fluid densities are water: 1000 kg/m3 , oil: 790 kg/m3 and mercury(Hg): 13,600 kg/m3 .

A special tyre was inflated at 2 bar gage pressure on Earth, where the atmospheric pressurewas 1013 hPa and the acceleration of gravity 9.81 m/s2.The tyre was then transported without pressure leakage on Mars, where the atmosphericpressure was 6 mbar and the acceleration of gravity 3.7 m/s 2.Questions:(a) Measuring on Earth the tyre pressure with a mercury manometer, what was themanometer reading in mm?(b) Measuring on Mars the tyre pressure with a mercury manometer, what was themanometer reading in mm?

For a liquid with the contact angle of 53.6 degrees and surface tension of 0.075 N/m, capillary rise is 2.50 m. What is the expected capillary rise in meters if the liquid is replaced with another with a contact angle of 12.7 degrees and a similar surface tension? (answer should be accurate to 2 decimal places) Answer: