Question

19. The gauge pressure of a gas is -15 mm Hg at a point where atmospheric pressure is 760 mmHg. What is the absolute pressure for this gas? How do you understand for -20 mm Hg as a pressure unit? 20. Three different liquids are used in the following manometer. 1 Calculate pressure the differential pressure P1-P2 (D/P) in kPa if the desnity of Fluid A is 0.70 g/cm² ,the density of Fluid B is 1.00 g/cm3 and the density of Fluis C is 1.37 g/cm², and height hl is 30.0cm & h2 is 24.0 cm. Use the formula you developed in tutorial session.

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P2 Ra ha

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