I cant figure these out please help Problem 3.026X Your answer is incorrect. Try again.A piston-cylinder assembly contains 0.5 lb of propane. The propane expands from an initial state where p, = 60 Ibf/in.2 and T, = 30°F to a final state where p, = 10 Ibf/in.2 During theprocess, the pressure and specific volume are related by pv2 - constant.Determine the energy transfer by work, in Btu.8.712W =Btuthe tolerance is +/-5%Click if you would like to Show Work for this question: Open Show Work Problem 3.011Determine the volume, in ft, of 2 Ib of a two-phase liquid-vapor mixture of Refrigerant 134A at 28°F with a quality of 30%.What is the pressure, in Ibf/in.2?v Part AX Your answer is incorrect. Try again.Determine the volume, in ft, of 2 Ib of a two-phase liquid-vapor mixture of Refrigerant 134A at 28°F with a quality of 30%.0.975893V =ft?the tolerance is +/-5%Click if you would like to Show Work for this question: Open Show WorkBy accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor.Attempts: 2 of 5 usedSAVE FOR LATERSUBMIT ANSWER> Part B

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Problem 3.026 X Your answer is incorrect. Try again. A piston-cylinder assembly contains 0.5 Ib of propane. The propane expands from an initial state where p, = 60 Ibf/in.2 and T, = 30°F to a final state where p, = 10 Ibf/in.2 During the process, the pressure and specific volume are related by pv2 = constant. Determine the energy transfer by work, in Btu. 8.712 W = Btu the tolerance is +/-5% Click if you would like to Show Work for this question: Open Show Work

Problem 3.026 X Your answer is incorrect. Try again. A piston-cylinder assembly contains 0.5 Ib of propane. The propane expands from an initial state where p, = 60 Ibf/in.2 and T, = 30°F to a final state where p, = 10 Ibf/in.2 During the process, the pressure and specific volume are related by pv2 = constant. Determine the energy transfer by work, in Btu. 8.712 W = Btu the tolerance is +/-5% Click if you would like to Show Work for this question: Open Show Work

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A rigid, well-insulated tank contains air. A partition in the tank separates 12 ft^3 of air at 14.7 lbf/in2, 40◦F (left side of the tank) from 10 ft^3 of air at 50 lbf/in2, 200◦F(right side of the tank), as illustrated in the figure. The partition is removed and air from the two sides mix until a final equilibrium state is attained. The air can be modeled as an ideal gas, and kinetic and potential energy effects can be neglected. (Note: values for the left side of the tank are denoted with a subscript L, and values for the right side of the tank are denoted with a subscript R). a) Determine the final temperature (in F) b) Determine the final pressure (in lbf/in^2) c) Calculate the amount of entropy produced, in Btu/R d) Is this mixing process reversible or irreversible?
Nitrogen (N2) gas within a piston-cylinder assembly undergoes a process from p1 = 25 bar, V1 = 0.8 m3 to a state where V2 = 3.5 m3. The relationship between pressure and volume during the process is pV1.5 = constant. For the N2, determine (a) the pressure at state 2, in bar, and (b) the work, in kJ. Will nitrogen gas be expanded or compressed at the end of the process?
Carbon Dioxide is contained in a piston-cylinder assembly and undergoes a cycle made of the fol- lowing processes: • Process 1-2: Constant volume from 1 bar, 300 K to 600 K • Process 2–3: Polytropic expansion with n=k until P3 = P1 • Process 3-1: Isobaric compression (a) Sketch the cycle on p-v and T-v coordinates (b) Determine the work and heat transfer in each process, in kJ/kg (c) Determine the type of cycle that this is. If it is a power cycle, compute the thermal efficiency. Otherwise, compute the coefficient of performance for a heat pump cycle.
A piston–cylinder assembly contains 5.0 kg of air, initially at 2.0 bar, 30 oC. The air undergoes a process to a state where the pressure is 1.5 bar, during which the pressure–volume relationship is pV = constant. Assume ideal gas behavior for the air. Determine the work and heat transfer, in kJ.
Two vessels A and B of different sizes are connected by a pipe with a valve. Vessel A contains 134L of air at 2,639.66 kPa, 87.38°C. Vessel B, of unknown volume, contains air at 69.36 kPa, 6.33°C. The valve is opened and, when the properties have been determined, it is found that Pm = 1,041.50 kPa, tm = 46.30°C. What is the volume of vessel B?
Five lbs of propane is contained in a closed, rigid tank initially at 80 lbf/in.2, 90°F. Heat transfer occurs until the final temperature in the tank is 0°F. Kinetic and potential energy effects are negligible.Determine the amount of energy transfer by heat, in Btu.
Carbon dioxide (CO2) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 50 lbf/in2, and a volume of 2.2 ft3. The gas is stirred until its temperature is 500°F. During this process heat transfer from the gas to its surroundings occurs in an amount 2.6 Btu. Assume ideal gas behavior, but do not assume constant specific heats. Kinetic and potential energy effects can be ignored. Determine the mass of the carbon dioxide, in lb, and the work, in Btu.
show all work for each step A closed, rigid tank is filled with only saturated vapor (water), initially at 20 bar, is cooled until the pressure is 3 bar. Show the process of the water on a sketch of the T-v diagram and evaluate the heat transfer, in kJ/kg a. Locate the states on the T-v coordinate and process. b.Write your energy balance equation to evaluate the heat transfer c. Determine the specific internal energy at state 1 (u1 )in kJ/kg d. Determine the quality x at state 2 e. Determine the specific internal energy at state 2 (u2) in kJ/kgf. Determine the energy transfer by heat/mass during the process (kJ/kg)
Five Kg of water contained in a piston-cylinder assembly expands from an initial state where T1 = 400o C, P1 = 700 KPa to a final state where T2 =200o C, P2 = 300 KPa, with no significant effects of kinetic and potential energy. The accompanying provides additional data at the two states. It is claimed that the water undergoes an adiabatic process between these states, while developing work. Evaluate this claim STATE 1 STATE 2 T1 = 400o C T2 = 200O C P1 =700KPa = 7bar P2 =300KPa = 3 bar v1= .4397 m3/kg v2=.7160 m3/kg u1 =2960.9 kj/kg u2=2650.7 kj/kg h1 = 3268.7 kj/kg h2=2865.5 kj/kg s1=7.6350 kj/kg * K s2=7.3115 lj/kg
Need help going through the process of solving this problem to see where I'm going right, and where I'm going wrong One kg of carbon dioxide (CO2), in a piston-cylinder assembly, initially at 90°F, 30 lbf/in^2, is compressed isothermally to a final pressure of 110 lbf/in^2. During compression, the nitrogen rejects energy by heat transfer through the cylinder’s end wall, which has inner and outer temperatures of 90°F and 80°F, respectively. Let T0 = 80°F, and P0 = 15.5 lbf/in^2. Using the ideal gas model for the carbon dioxide. Consider carbon dioxide as the system: a. Determine the amount of work required for the compression, in Btu. b. Determine the exergy transfer accompanying the work, in Btu. c. Determine the exergy transfer accompanying the heat transfer, in Btu. d. Determine the exergy destroyed during the process, in Btu.
Problem 3.075 SI A piston–cylinder assembly contains 4.0 kg of air, initially at 2.0 bar, 30 oC. The air undergoes a process to a state where the pressure is 1.0 bar, during which the pressure–volume relationship is pV = constant. Assume ideal gas behavior for the air. Determine the work and heat transfer, in kJ.
Steam, initially at 5 MPa, 280°C undergoes a polytropic process in a piston–cylinder assembly to a final pressure of 20 MPa. If the polytropic constant, n = 1.4, calculate the non-flow work in kJ/kg.