3. ThermodynamicsQ9: A fluid at a pressure of 3 bar, and with specific volume of0.18 m/kg , contained in a cylinder hchind a piston expandsreversibly to a pressure of 0.6 bar according to a law, p-c/vwhere c is a constant. The work done by the fluid on the piston is:(a) 29800 J/kg(b) 29860 J/kg(e) 29840 J/kgQ10: 0.01 kg of a certain perfect gas occupies a volume of0.003 m' at a pressure of 7 bar and a temperature of 31 °C.Calculate the molar mass of the gas. When the gas is allowed toexpand until the pressure is l bar the final volume is 0.02 mCalculate the final temperature.Iraqet -07703309779

Q9: A fluid at a pressure of 3 bar, and with specific volume of 0.18 m'/kg , contained in a cylinder behind a piston expands reversibly to a pressure of 0.6 bar according to a law, p-clv where c is a constant. The work done by the fluid on the piston is: (a) 29800 J/kg (b) 29860 Jkg (c) 29840 J/kg Q10: 0.01 kg of a certain perfect gas occupies a volume of 0.003 m' at a pressure of 7 bar and a temperature of 131 °C. Calculate the molar mass of the gas. When the gas is allowed to expand until the pressure is l bar the final volume is 0.02 m. Calculate the final temperature. 79

Q9: A fluid at a pressure of 3 bar, and with specific volume of 0.18 m'/kg , contained in a cylinder behind a piston expands reversibly to a pressure of 0.6 bar according to a law, p-clv where c is a constant. The work done by the fluid on the piston is: (a) 29800 J/kg (b) 29860 Jkg (c) 29840 J/kg Q10: 0.01 kg of a certain perfect gas occupies a volume of 0.003 m' at a pressure of 7 bar and a temperature of 131 °C. Calculate the molar mass of the gas. When the gas is allowed to expand until the pressure is l bar the final volume is 0.02 m. Calculate the final temperature. 79

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

An ideal gas of 2 kg occupies a volume of 0.3 m' at pressure, 10 bar and temperature, 500K. the intenal energy decreases to 300 kJ when this gas expands polytropically by the law Pv^1.2 = C. Given the specific heat, Cv = 0.75 kJkg.K. Determine:i )The specific gas constant.ii)The final temperature.iii) The final pressure.(iv)The final volume of the gas.(V)The work done.
Refrigerant 134a is compressed with no heat transfer in a piston–cylinder assembly from 30 lbf/in.2, 20°F to 160 lbf/in.2 The mass of refrigerant is 0.04 lb. For the refrigerant as the system, W = 0.56 Btu. Kinetic and potential energy effects are negligible. Determine the final temperature, in °F.
Water, initially a saturated liquid at 100°C, is contained in a piston-cylinderassembly. The water undergoes a process where it changes to the corresponding saturatedvapor state, during which the piston moves freely in the cylinder. If the change of state isbrought about by heating the water as it undergoes an internally reversible process atconstant pressure and temperature, determine the (a) work and (b) heat transfer per unitmass, each in kJ/kg.
During a polytropic process, 10 lbm of an ideal gas, whos R=40 ft.lbm/lbf.R and Cp=0.25 BTU/lbm.R, changes state from 20 psia and 40oF to 120 psia and 340oF. Determine a)”n” b) change in internal energy c) change in enthalpy d) change in entropy e) heat f) work non flow g) work steady flowPLS ANSWER D, E, F, G
In an industrial process 0.4 kg of oxygen is compressed according to PVn =C,where n = 1, from 1.01 bar and 22 oC to 5.5 bar. Determine the work done andthe heat transfer during the process.
4. One pound of an ideal gas undergoes an isentropic process from 95.3 psig and a volume of 0.6 ft3 to a final volume of 3.6 ft3. If cp = 0.124 and cv = 0.093 Btu/lb.R, what are (a) t2, (b) p2, (c) ∆H, and (d) W. Answers: (a) – 243.10F; (b) 10.09 psia; (c) – 21.96 Btu; (d) 16.48 Btu
Oxygen 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 and Change in internal energy (ii) Final pressure of the gas, if the initial pressure is 1 atm Final temperature of gas, if the initial temperature is 80°C and mass
1 kg of an ideal gas undergoes an isentropic process from 780 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.38 kJ/kg-K and Cp = 0.52 kJ/kg-K, determine: (ANSWER MUST BE EXACT TO CHOICES) d) the work non flow in kJ CHOICES 19.52 16.97 17.13
Refrigerant 134a enters the evaporator of a refrigeration system operating at steady state at -16oC and a quality of 20% at a velocity of 8 m/s. At the exit, the refrigerant is a saturated vapor at -16oC. The evaporator flow channel has constant diameter of 1.7 cm. Determine the mass flow rate of the refrigerant, in kg/s, and the velocity at the exit, in m/s.
A mass of 0.05 kg of air (k = 1.4) at a temperature of 40 deg.C and a pressure of1 bar is compressed isentropically to 5 bar. Determine (a) final temperature, (b)final volume, (c) work transfer, (d) heat transfer and (e) change in internalenergy.
Oxygen 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 (ii) Change in internal energy (iii) Final pressure of the gas, if the initial pressure is 1 atm (iv) Final temperature of gas, if the initial temperature is 80°C
A system consisting of 3 lb of water vapor in a piston–cylinder assembly, initially at 350°F and a volume of 71.7 ft3, is expanded in a constant‐pressure process to a volume of 85.38 ft3. The system then is compressed isothermally to a final volume of 28.2 ft3. During the isothermal compression, energy transfer by work into the system is 72 Btu. Kinetic and potential energy effects are negligible. Determine the heat transfer, in Btu, for each process.