A 60-lb aluminum bar, initially at T3 = 150°F, is placed in a tank together with 190 lb of liquid water, initially at Tw = 70°F, and allowedto achieve thermal equilibrium. The aluminum bar and water can be modeled as incompressible with specific heats c, = 0.216Btu/lb-°R and Cw = 0.998 Btu/lb-°R, respectively. Consider the aluminum bar and water as the system and ignore heat transferbetween the system and its surroundings.Determine the final temperature Tr, in °F, and the amount of entropy produced within the tank, in Btu/°R.

Answered: Image /qna-images/answer/e8c8884b-b853-4835-b43e-4335a7ddc437.jpg

Answered: A 60-lb aluminum bar, initially at T; =…

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

D2
A 30-lb iron casting, initially at 1500°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. T+= 257.4978 (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. 0 = °F i Btu/°R
pls answer the given
A perfect gas has a value of R=58.8 ft.lb/lb.R and k=1.26. If 20 Btu are added to 5 lb of this gas at constant volume when the initial temperature is 90° F, find (a) ∆U and (b) work for a nonflow process.
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.
Refrigerant 134a at p1 = 30 lbş/in?, T1 = 40°F enters a compressor operating at steady state with a mass flow rate of 250 lb/h and exits as saturated vapor at p2 = 160 lbę/in?. Heat transfer occurs from the compressor to its surroundings, which are at To = 40°F. Changes in kinetic and potential energy can be ignored. The power input to the compressor is 2.5 hp. Determine the heat transfer rate for the compressor, in Btu/hr, and the entropy production rate for the compressor, in Btu/hr-°R.
3. Air is contained within a piston-cylinder assembly The cross sectional area of the piston is 0.01 m². Initially the piston is at 1 bar and 25°C, 10 cm above the base of the cylinder. In this state, the spring exerts no force on the piston. The system is then reversibly heated to 100°C. As the spring is compressed, it exerts a force on the piston according to: F=-kx where k= 50,000 N/m and x is the displacement length from its uncompressed position. Determine the work done. a. -166 J b. -216 J c. 166 J d. 216 J
Five kilograms of a two-phase liquid-vapor mixture of water initially at 300\deg C and x1 = 0.5 is heated from the initial state to a saturated vapor state while the volume remains constant. The process is brought about by heat transfer from a thermal reservoir at 380\deg C. The temperature of the water at the location where the heat transfer occurs is 380\deg C.Let To = 300 K, Po = 1 bar, and ignore the effects of motion and gravity.
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. T₁ = i (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. J = °F Mi Btu/ºR
I need the answer quickly
Two kg of an ideal gas at 227°C expand isothermally until its volume is tripled. Calculate the amount of work done. Assume: C = 1.005 KJ/kg K and C= 0.718 KJ/kg K. %3D %3D Select one: O a. 3153 KJ O b. 3153J O C. 315.30 KJ O d. 31530J
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?

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