Please solve correctly A gas undergoes a process in a piston-cylinder assembly during which the pressure-specific volume relation is pv12 - constant. Themass of the gas is 0.4 lb and the following data are known: p1 - 160 lbf/in.?, V1 = 1 ft, and p2 = 480 Ibf/in.? During the process, heattransfer from the gas is 2.1 Btu. Kinetic and potential energy effects are negligible. Determine the change in specific internal energy ofthe gas, in Btu/lb.Au =Btu/lbeTextbook and MediaSave for LaterAttempts: 0 of 4 usedSubmit Answer

Given data as per question Mass of gas =0.4 lb P1 =160 lbf/in2 V1 =1 ft3 P2 =480 lbf/in2 Heat…

Answered: A gas undergoes a process in a…

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

A 75-m-high water body that is open to the atmosphere is available. The mechanical energy of this water body per unit mass is (a) 736 kJ/kg (b) 0.736 kJ/kg (c) 0.75 kJ/kg (d) 75 kJ/kg (e) 150 kJ/kg
The pressure from water mains located at street level may be insufficient for delivering water to the upper floors of tall buildings. In such a case, water may be pumped up to a tank that feeds water to the building by gravity. For an open storage tank atop a 300-ft-tall building, determine the pressure, in lbf/in² , at the bottom of the tank when filled to a depth of 20 ft. The density of water is 62.2 lb/ft³, g = 32.0 ft/s2 , and the local atmospheric pressure is 14.7 lbf/in²
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) a) the final temperature in degrees Celsius CHOICES -233 -217 -171 b) the final pressure in kPa CHOICES 78.05 69.36 68.84 c) the change in enthalpy in kJ CHOICES -22.96 -24.56 -26.65 d) the work non flow in kJ CHOICES 19.52 16.97 17.13
The initial pressure, temperature and volume of a fixed quantity of steam are 5.5 bar, 350°C and 0.1 m3 respectively. The steam is compressed at constant temperature. Calculate (i) the mass of steam, (ii) the pressure at which condensation of steam just begins, and (iii) the quality of steam when the volume is 1.4 × 10−3 m3. Indicate the process on a P-V and T-V diagram for water. [Answers: (i) 0.1915 kg, (ii) 165.4 bar, (iii) 0.788]
A fluid system undergoes a non-flow frictionless process following the pressure-volume relation as p = 10 / V + 3 where p is in bar and V is in m3. During the process the volume changes from 0.3 m3 to 0.1 m3 and the system rejects 90 kJ of heat. Determine :(i) Change in internal energy ;(ii) Change in enthalpy
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
A gas in a piston–cylinder assembly undergoes a process for which the relationship between pressure and volume is pVn = constant. The initial pressure is 1 bar, the initial volume is 0.10 m3, and the final pressure is 9 bar. The value of the polytropic exponent is n = 1.5. Determine the final volume, in m3, and the work for the process, in kJ.
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 m3and 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 .
Refrigerant 134a expands in a piston–cylinder assembly from p1 = 140 lbf/in2 and T1 = 140°F to p2 = 30 lbf/in2 and T2 = 80 oF. The mass of refrigerant is 0.46 lb. During the process, the work done by the refrigerant is 4.32 Btu. Kinetic and potential energy effects are negligible. Determine the initial volume of the refrigerant, V1, in ft3, and the heat transfer for the process, in Btu.
A closed system containing gas expands slowly in a piston cylinder from 321.7 psf and 8.2 ft3 to a final volume of 19.5 ft3. Determine the work done if the pressure distribution is determined to be P2V6 = c. a. 28.6 ft-lb b. 130.9 ft-lb c. 2012.4 ft-lb d. 9222.9 ft-lb
Evaluate and compare the work and heat transfer when 0.75 kg of air, at a pressure of 1.5 barand a temperature of 27 °C, expands in a closed thermodynamic system to three times itsinitial volume (i) according to Boyle’s law and (ii) according to Charles’ law.The characteristic gas constant for air is 287 Jkg-1K-1 and its specific heat capacity at constantvolume is 718 Jkg-1K-1. Explain the differences in the answers to the two techniques.
Air expands adiabatically in a piston–cylinder assembly from an initial state where p1 = 100 lbf/in.2, v1 = 3.704 ft3/lb, and T1 = 1000 °R, to a final state where p2 = 20 lbf/in.2 The process is polytropic with n = 1.4. The change in specific internal energy, in Btu/lb, can be expressed in terms of temperature change as Δu=(0.171)(T2 - T1).Determine the final temperature, in °R.Kinetic and potential energy effects can be neglected.

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS