QUESTION II: 0.5 m³ of air at T1 = 67 °C, P1 = 700 kPa undergoes a polytropic expansion to a final pressure of 350 kPa. The process follows pV13 constant and the work done by the air is 175 kJ. Assuming ideal gas behavior for the air, and neglecting kinetic and potential energy effects, determine: (a) the final temperature, in °C. (b) the heat transfer, in kJ. Air

QUESTION II: 0.5 m³ of air at T1 = 67 °C, P1 = 700 kPa undergoes a polytropic expansion to a final pressure of 350 kPa. The process follows pV13 constant and the work done by the air is 175 kJ. Assuming ideal gas behavior for the air, and neglecting kinetic and potential energy effects, determine: (a) the final temperature, in °C. (b) the heat transfer, in kJ. Air

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

See similar textbooks

Similar questions

13
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 pv¹.30 = 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= Save for Later Btu Attempts: 0 of 4 used Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Submit Answer
A rigid, well-insulated tank contains a two-phase mixture of ammonia with 0.0022 ft³ of saturated liquid and 1.5 ft3 of saturated vapor, initially at p₁ = 70 lb/in². A paddle wheel stirs the mixture until only saturated vapor at higher pressure, p2, remains in the tank. Kinetic and potential energy effects are negligible. Determine the pressure p2, in lb/in², and the amount of energy transfer by work, in Btu. Step 1 * Your answer is incorrect. Determine p2, in lb/in². P2= i81.56 lb/in²
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.
For H₂O, determine the specific volume at each of the indicated state, in m³/kg. (a) T = 600 ˚C, p = 20 MPa. (b) T = 80 °C, p = 20 MPa. (c) T = 60 °C, p = 2.5 MPa. Part A Determine the specific volume, in m³/kg, for state (a). m³/kg V = Part B Determine the specific volume, in m³/kg, for state (b). m³/kg V = Part C Determine the specific volume, in m³/kg, for state (c). m³/kg V =
Nitrogen undergoes an adiabatic process, the pressure volume relationship given as p = (5/V)+1.5 where is in bar and V is in m3. During the process the volume changes from 1.5 x 108 mm3 to 0.05 m3 and the system takes 45 kJ of heat. Determine (i) Work done (i) Work done (ii) Change in internal energy (iii) Final pressure of the gas, if the initial pressure is 1 bar (iv) Final temperature of gas, if the initial temperature is 80°C (v) mass (vi) Change in enthalpy .
Calculate the total work done (in J) by 2.19 mol of an ideal gas with a pressure of 4.85 MPa and a volume of 4.1 L that undergoes a process which includes the following steps: Isothermal expansion that doubles the volume Isochorical cool down until the pressure is 0.92 MPa Isothermal compression until the volume goes back to 4.1 L and the pressure is 2.03 MPa. Isochorical heating to return to the initial state
This question requires the use of the Thermodynamic Property Tables supplied asadditional material.In addition, for steam, the specific ideal gas constant = 461.5 J/kg KA closed system is comprised of pure water substance initially at a temperature of 500 C and a pressure of 20 MPa (state 1).The system undergoes an isochoric process whereby its pressure drops to 0.1 Mpa (state 2). (d) For state 1 evaluate the specific volume assuming the steam behaves as an ideal gas and comment on your result.
step by step solution with units. Thermodynamic-Processes of gases
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
letter d
1. During a polytropic process, 10 lb of an ideal gas, whose R=40 ft.lb/lb.R and c = 0.25 Btu/lb.R, changes state from 20 psia and 40°F to 120 psia and 340°F. Determine (a) n, (b) AU and AH, (c) AS, (d) Q, (e) SpdV, (f) - SVdp. (g) If the process is steady flow during which AK = 0, what is W?. What is AK if W, = 0? (h) What is the work for a nonflow process?