Air is compressed in a piston-cylinder assembly from p₁ = 10 lb/in², T₁ = 500°R, V₁ = 9 ft³ to a final volume of V₂ = 1 ft³ in a process described by pvl.30 = constant. Assume ideal gas behavior and neglect kinetic and potential energy effects. Using constant specific heats evaluated at T₁, determine the work and the heat transfer, in Btu. Step 1 Determine the work, in Btu. W₁2= i Save for Later Btu Attempts: 0 of 4 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above.

Air is compressed in a piston-cylinder assembly from p₁ = 10 lb/in², T₁ = 500°R, V₁ = 9 ft³ to a final volume of V₂ = 1 ft³ in a process described by pvl.30 = constant. Assume ideal gas behavior and neglect kinetic and potential energy effects. Using constant specific heats evaluated at T₁, determine the work and the heat transfer, in Btu. Step 1 Determine the work, in Btu. W₁2= i Save for Later Btu Attempts: 0 of 4 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above.

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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Argon (molar mass 40 kg/kmol) compresses reversibly in an adiabatic system from 5 bar, 25 0C to a volume of 0.2 m3. If the initial volume occupied was 0.9 m3, calculate the work input in MJ to 3 decimal places. Assume nitrogen to be a perfect gas and take cv = 0.3122 k J / k g K.
Carbon dioxide (CO₂) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 50 lb/in², and a volume of 1.6 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.
2. An ideal gas in a piston/cylinder system undergoes a process in which the specific volume is increased. In which process is the most work done for the same volume change? a. Isobaric process b. Isothermal process C. Isentropic process, k = 1.4 d. Polytropic process, n = 2 e. Cannot tell from this information
An oxygen gas R = 0.2598 KJ/kg°k and k = 1.395. If 4 kg of oxygen undergo a reversible non flow constant pressure process from initial volume =1.2 cubic meter and initial pressure = 690 kPa to a state where final temperature = 600°C. 1. Determine the Change in Internal Energy. choices: a.200.60 KJ. b.198.45 KJ. c.99.54 KJ. d.200.55 KJ 2. Determine the constant pressure-specific heat. choices: a.0.9865 KJ/kg-°K. b.0.9175 KJ/kg-°K. c.0.8580 KJ/Kg-°K. d.0.7843 KJ/kg-°K need complete solution, cancellation and symbol:)
awuIs 2 kg of air undergoes a power cycle undergocs a power cycle consisting of the following processes: Process 1-2: Constant-temperature expansion from p, = 4 bar, v, = 1 m³ /kg, to p2 = 2 bar, v2 = 2 m3/kg. Process 2-3: Constant-pressure compression to T3 = 696.9 K. Process 3-1: Constant-volume heating to state 1. Assume ideal gas behavior and neglect kinetic and potential energy effects. Show that T; = 1393.7 K and find T Sketch the cycle on a T-v diagram and label the states. Find the work done and heat transferred during cach process to complete this chart: b C. Process W (kJ) Q (kJ) iti 1-2 2-3 3-1 TOTAL Find the thermal efficiency of the cycle. For an energy balance on the entire cycle (1-2-3-1), what should the change in system energy be? Does that hold in this case? Add a Caption Pedro Castaño shared with you > Wednesday • Feb 23, 2022•7:24 PM Adjust IMG_7188 Apple iPhone 12 Pro Max НEIF Wide Camera – 26 mm f1.6 3 MP • 1914 × 1728 • 3.5 MB i
A 300-lb iron casting. initially at 600°F, is quenched in a tank filled with 2121 lb of oil, initially at 80°F. The iron casting and oil can be modeled as incompressible with specific heats 0.10 Btu/lb - °R. and 0.45 Btu/lb - °R, respectively. (a) For the iron casting and oil as the system.determine the final equilibrium temperature, in °F. Ignore heat transfer between the system and its surroundings. °F (b) For the iron casting and oil as the system,determine the amount of entropy produced within the tank, in Btu/°R. Ignore heat transfer between the system and its surroundings. Btu/°R
X Your answer is incorrect. A rigid tank whose volume is 4 m³, initially containing air at 1 bar, 295 K, is connected by a valve to a large vessel holding air at 6 bar, 295 K. The valve is opened only as long as required to fill the tank with air to a pressure of 6 bar and a temperature of 350 K. Assuming the ideal gas model for the air, determine the heat transfer between the tank contents and the surroundings, in kJ. Qev = i 88.08 eTextbook and Media Hint Save for Later kJ Attempts: unlimited 4 Submit Answer