As shown in the figure on the right, the specific gravity (SG) of Fluid A is 4.0
ID: 3278677 • Letter: A
Question
As shown in the figure on the right, the specific gravity (SG) of Fluid A is 4.0, while the specific weight of fluid B is 8 kN/m^3. Please determine the absolute pressure, P_1, shown by a manometer, if the local atmosphere pressure is 735 mm Hg, with the density of Hg being 13, 550 kg/m^3. Please write a short statement (1 paragraph, 100-150 words) describing the application of thermodynamics in one household appliance (just one example) that you use daily at home. You need to explain the main function of this appliance, the type of fuel or the energy consumed, state if there is a conversion from one form of energy to another during operation of the appliance, and the main factors to be considered for purchase of this appliance.Explanation / Answer
8)Equating the pressure at junction of the liquids,
Patm + rho g h1 = PA + rho g h2
13550*9.8*0.735 + 8000*0.15 = PA + 4*1000*9.8*-0.05
PA = 13550*9.8*0.735 + 8000*0.15 + 4*1000*9.8*0.05
= 100761 Pa answer
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