A pneumatic cylinder (a piston cylinder with air) must close a door with a force of
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- Temperature of nitrogen in a vessel of volume 2 m' is 288 K. A U-tube manometer connected to the vessel shows a reading of 7 cm of mercury (level higher in the end open to atmosphere). The universal gas constant is 8314 J/kg-mol-K, atmospheric pressure is L01325 bar, acceleration due to gravity is 981m/s² and density of mercury is 13600 kg / m’. The mass of nitrogen (in kg) in the vessel is 3arrow_forward35 kg of certain gas is contained within the piston- cylinder assembly. THE GAS undergoes a process which is pv=constant.The given conditions as follows; p1=6bars,v1=0.2cubic meters,v2=0.4 cubits meters,the change of internal energy=10.5kj/kg.(hints:kE=PE=0) A)Find P2 in bars B) Find the work in kj for n=1.0 C) Find the net heat transfer Q for the process in kjarrow_forwardB4arrow_forward
- mass should be kg, not N. Make your own assumption. I shall correct accordingly.arrow_forwardThe hydraulic jack in the figure is used to lift a 1000 kg mass load to a height y2 = 150 mm. The diameter of the lift cylinder is D = 50 mm. With this information, analyze the system and determine. a) The pressure, in bar.b) The diameter d of the hand pump cylinder, so that the driving force F1 is 50 N. c) If the maximum displacement of the pump pistonfor y1 = 20 mm, how many drives will it take to fully lift the load? d) If you want to reduce the number of actuations by 2/3, keeping the diameter of the lift cylinder, D, the same actuation force F1, and the stroke y1, what geometric changes can be made in the system?arrow_forwardA U-tube manometer using mercury shows that the gas pressure inside a tank is 30cm. Calculate the actual pressure of the gas inside the vessel if the local barometer gives atmospheric pressure as 1 bar Take g = 9.805 m/s?, density of mercury=13600kg/m3 Select one: O a. 1.40 KPa O b. 1.60 Bar O .0.40 Bar O d. 1.40 Bararrow_forward
- The Louisiana Superdome has an interior volume of 125 million ft3, covered by a 440,000 ft² roof. On a particular day, the interior air pressure gave a manometer reading of 19 inches mercury (pHg = 13.6 g/cm³). Local atmospheric pressure is 102 kPa. 1. kg Calculate the mass of the air inside, assuming an average temperature of 20 °C. 2. kN Calculate the net force applied to the roof by the interior/exterior air (do not account for the weight of the roof). Assume the roof is flat.arrow_forwardAs shown in the figure below, a piston-cylinder assembly contains 1 kg of water at T1=200° C and P1 = 1.5 bar holding the piston against the stops. The atmospheric pressure is 1 bar, and you can assume the piston's weight is negligible. The water is slowly cooled until the piston just begins to move downward in the cylinder. What is the pressure (P2), temperature (T2), and volume (V2) of water at this point? (°C), V2 = P2 = (m³) The cooling continues until water has entirely turned into saturated liquid. What is the pressure(P3) and temperature (T3), and volume (V3) of water at this point? (°C), V3 = P3 = (bar), T2 = (bar), T3 = Qtotal Calculate the total work done on the moving boundary of this system during the two processes. W total (kJ) Calculate the total heat transfer during the two processes. (kJ) On paper draw the P-v diagram for water going through the above processes. Show your detailed work on paper. hint: you must also find v1, u1, and u3. Patm = 1 bar Piston (m³) Stopsarrow_forwardThe mass of a fluid system is 0.311 slug, its density is 480 kg/m^3 and g is 31.9 fps. Find (a) the specific volume. Find (b) the specific weight.Find (c) the total volume.arrow_forward
- Q 3 pleasearrow_forwardWater d2 = 190 mm d, = 500 mm d3 = 275 mm A B Blood In a laboratory, a two fluid manometer (as shown) is used to measure the pressure difference between two points A and B in a conduit carrying blood. Calculate the pressure difference assuming that the density of blood is 1,060 kg/m3 and the density of the water is 1,000 kg/m³. Give your answer in Pa.arrow_forwardQ5: Calculate the absolute pressure, P1 in kPa, of the manometer shown in Figure below. The local atmospheric pressure is 758 mmHg.arrow_forward
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