A 62-kg copper block initially at 140°C is dropped into an insulated tank that contains 90 L of water at 10°C. Determine the finalequilibrium temperature and the total entropy change for this process. The specific heat of water at 25°C is cp 4.18 kJ/kg-K. Thedensity of water is 997 kg/m. The specific heat of copper at 27°C is cp0.386 kJ/kg-K.WaterСopper90 LThe final equilibrium temperature isК.kJ/KThe total entropy change during this process is

Refer the Table “Properties of common liquids, solids, and foods”, select the specific heat of…

Answered: A 62-kg copper block initially at 140°C…

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

50 grams of water at 20ºC is converted into steam at 250ºC at constant atmospheric pressure. Assuming the heat capacity per gram of liquid water to remain constant at 4.2 J/g K and the heat of vaporization at 100ºC to be 226 J/g, and using Cp/R=a+bT+cT2, calculate the entropy change of the system. a=3.652, b=1.157x10-3 K-1, c=0.142x10-6 K-2
A 30-kg aluminum block initially at 140°C is brought into contact with a 40-kg block of iron at 60°C in an insulated enclosure. Determine the final equilibrium temperature and the total entropy change for this process.
A 5-lb of copper at 200°F is submerged in 10 lbm of water at 50°F, and after a period of time, equilibrium is established. If the container is insulated, calculate the entropy change.A. 0B. 0.0167 Btu/RC. 0.0255 Btu/RD. 0.0315 Btu/R
Initially, the air with a pressure of 190 kPa and a volume of 1.1 m3 is heated up to 680 oC. Since the mass of air is 39 kg, calculate the entropy change that occurs during this heating process (You can use the ideal gas equations for air).
A 40-kg aluminum block initially at 227°C is brought into contact with a 40-kg block of iron at 50°C in an insulated enclosure. Determine the final equilibrium temperature (in °C) and the entropy change (kJ/K) for each substance and the total for this process. Refer to the tables at the back of the prescribed textbook for the required values.
1kg of liquid subcooled water at 90°C is left to cool down at a LARGE room at 25°C until thermodynamic equilibrium is reached. Calculate the entropy generation during the process. (Include the units) Answer:
Water vapor at 100 kPa and 150°C is compressed isothermally until half the vapor has condensed. How much work must be performed on the steam in this compression process in kW if the mass flow rate is 6.132 kg/s? For the steam table, please refer to the green book entitled " Thermodynamic Properties of Water Including Vapor, Liquid, and Solid Phases"
The inner and outer glasses of a 2-m × 2-m doublepane window are at 18°C and 6°C, respectively. If the glasses are very nearly isothermal and the rate of heat transfer through the window is 110 W, determine the rates of entropy transfer through both sides of the window and the rate of entropy generation within the window, in W/K.
A rigid tank is divided into two equal parts by a partition. One part of the tank contains 1.5 kg of compressed liquid water at 400 kPa and 60°C while the other part is evacuated. The partition is now removed, and the water expands to fill the entire tank. Determine the entropy change of water during this process, if the final pressure in the tank is 40 kPa. Use steam tables. compressed liquid 400 kPa 60°C Vacuum The entropy change of water during this process is KJ/K.
A well-insulated ice-water bath at 0.0°C contains 20 g ice. Throughout this experiment, the bath is maintained at the constant pressure of 1 atm. When a piece of nickel at 100°C is dropped into the bath, 10.0 g of the ice melts. Calculate the total entropy change for the thermodynamic universe of this process. (Specific heats at constant P: nickel, 0.46 J K-1 g-1 ; water, 4.18 J K-1 g-1; ice, 2.09 J K-1g-1. Enthalpy of fusion of ice, 334 J g-1.)
A 4-kg steel rod 873°C (specific heat= 0.85kJ/kg-K) is annealed in a cylindrical tank 3B0 kg of water originally at 20°C during a heat-treating process. What is the closest approximation to the overall entropy change of the system after annealing?
Determine the change in the entropy of air, in kJ/kg-K, as it undergoes a change of state from 100 kPa and 20°C to 600 kPa and 300°C using the equation of state P(v-a) = RT where a = 0.02 m³/kg. Also, find the value using the ideal gas equation of state. Use data from the tables. The value of the ideal gas constant for air is R = 0.287 kJ/kg.K. The change in the entropy of air for the equation of state is 0.1598 kJ/kg.K. kJ/kg-K and for the ideal gas equation of state is 0.1733

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