15. Three (3) adjacent bodies whose initial temperatures are 150°F, 350°F and 60°F have specific heats of 2lb-ft/lb-ºR, 4lb-ft/lb-ºR and 3.2lb-ft/lb-°R respectively. They are all placed inside a closed adiabatic (perfectly insulated) container until the equilibrium condition. If the first two (2) objects have a masses of 5lb, 3lb respectively, determine the mass of the 3rd body if the equilibrium temperature is attained at 87.5°F a. 39.2208lb b. 41.4787lb c. 42.8977lb d. 39.7227lb

15. Three (3) adjacent bodies whose initial temperatures are 150°F, 350°F and 60°F have specific heats of 2lb-ft/lb-ºR, 4lb-ft/lb-ºR and 3.2lb-ft/lb-°R respectively. They are all placed inside a closed adiabatic (perfectly insulated) container until the equilibrium condition. If the first two (2) objects have a masses of 5lb, 3lb respectively, determine the mass of the 3rd body if the equilibrium temperature is attained at 87.5°F a. 39.2208lb b. 41.4787lb c. 42.8977lb d. 39.7227lb

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

First Law of Thermodynamics Conservation of Mass no. 5
Apply the first law of thermodynamics as the statement of the conservation of energy principle to control volumes.
:What are the two general ways to increase the internal energy of a substance according to the first law of thermodynamics?
J 5 By polytropic process, isothermal process or adiabatic process to press the ideal gas from same p1 to same p2, which process has the maximum final temperature? Give some explanation. By polytropic process, isothermal process or adiabatic process to press the ideal gas from same p1 to same p2, which process has the maximum final temperature? Give some explanation.
What is the effect of overdamped state?
Which of the following is not a thermodynamic property? A. pressure B. temperature C. volume D. heat
1) While walking along the beach, a person sees a dented aluminum can whose mass is 100 grams. The can has been in the sun all day and is at a temperature of 80 °C. The person takes the hot aluminum can and throws it into the sea, which is at a temperature of 20 °C. The can transfers energy to the ocean, in the form of heat, until both reach thermal equilibrium. In addition to polluting the environment, how much did this person increase the entropy of the universe? Data: C(aluminium) =900 J/Kg*K and Tk=273+Tc
11-A piston-cylinder assembly initially contains refrigerant-134a (R-134a) at a pressure of 0.8 MPa and a temperature of 60°C. In the system where the piston can move freely, the temperature of R-134a is reduced to 32°C.Which of the following diagrams correctly represents the process?
21.) Superheated vapor is characterized by the following, EXCEPT: a.Higher temperature (T>Tsat @ given P) b.Higher specific volume (v>vf @ given P or T) c.Higher enthalpies (h>hg @given P or T) d.Lower pressure (P<Psat @ given T)
Question # 2 A gas of mass (4)kg undergoes a quasi-static expansion which follows a relationship p = a+bv, where ‘a’ and b are constants. The initial and final pressures are (1017) kpa and (217) kpa respectively and corresponding volumes are 0.2meter cubic and 1.2meter cubic. The specific internal energy of the gas is given by u=1.5 pv -85kJ/kg, where ‘p’is in kpa and ‘v’is in m3/kg. Describe the process involved in given system and calculate the net heat transfer and the maximum internal energy of the gas during expansion. (m3 means metercubic).
Question # 1 a) How engineering thermodynamic differs from statistical thermodynamic b) Explain what you understand by thermodynamic equilibrium? c) A can of soft drink at room temperature is put into the refrigerator so that it will cool. Would you model the can of soft drink as a closed system or as an open system? Explain.
The property that changes when the explosions within an internal combustion engine are converted to ultimately move the car is _______