12. Three (3) adjacent bodies whose initial temperatures are 1500F, 3500F and 600F have specific heats of 2lb-ft/lb0R, 4lb-ft/lb0R and 3.5lb-ft/lb0R 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 87.50F a. 39.2208lb b. 41.4787lb c. 42.8977lb d. 39.7227lb

Q: what is true of the heat content for a system at constant pressure

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Q: Identify if the property of the following steam: Temp Pressure Specific Volume C MPa m3/kg  ?…

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Q: A closed piston-cylinder system consists of 3.0 moles of monatomic gas, initially at temperature…

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Q: With a pressure of 120 kPa and a temperature of – 24 ºC, 0.19 liters of refrigerant 134a is turned…

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Q: 21. The state of an ideal gas with Cp (5/2)R is changed from P1 bar and V 12 m to P- 12 bar and…

A: Given that

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Q: 7-Nitrogen is present in a closed system at a pressure of 830 kPa and a temperature of 380°C. If…

A: Given data  Initial pressure (P1)= 830 kPa Initial temperature (T1)=380 °C =653 K Final pressure…

Q: piston-cylinder assembly contains 1.2 kg of air at a pressure of 313 kPa and a temperature of 107°C.…

A: For solution refer below images.

Q: Hydrogen gas at 65 kPa, 200 °C is heated in a closed, rigid vessel until it reaches to 400 °C.…

A:

Q: Robert Matthew Van Winkle takes 1 kg of ice and dumps it into 1 kg of water and, when equilibrium is…

A: mass of ice, mi=1 kgmass of water.mw=1 kgFinal mass, m=2 kgInitial temperature of water, Tw=0o C

Q: b) Air is compressed in a steady flow compressor operating at a pressure ratio of 8. The conditions…

A:

Q: - What is the temperature of refrigerant 134a with a pressure of 1400 kPa and an enthalpy of 308.34…

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A:

Q: What is the enthalpy of the 5 kg R-134a refrigerant in the container?

A: Option A is correct

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A: What is the specific enthalpy (kj/kg) and specific entropy (kJ/kg-K)

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A: In reversible process system always close to thermodynamic equilibrium with its surroundings.

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Q: Water with a mass of 2,425 kg passes from a saturated liquid state to saturated vapor at a constant…

A: Mass of water, m=2.425 kg Pressure of water, P=100 Kpa

Q: Which one of the following statements are true? A. In an ideal fluid, entropy decreases with time.…

A: A: From the second law of thermodynamics, the total entropy of closed system increases with time. B:…

Q: For the following adiabatic "ideal gas" system, DETERMINE: (a) Temp. Final; (b) the position of the…

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A:

Q: 1 kg of wet steam (has dryness fraction 52.16%) is heated at constant volume until it becomes…

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A:

Q: For which of the following processes does a gas do work? adiabatic expansion O isobaric compression…

A: Given: Processes for which gas does work.

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A: It is required to determine enthalpy of R134a at 360 kPa and-8°C

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Q: For the following adiabatic "ideal gas" system, DETERMINE: (a) Temp. Final; (b) the position of the…

A: To determine the final temperature and the final position of the movable wall.

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Q: Which of the following is explained by the 2nd Law of Thermodynamics? Select one: a. Ice is easier…

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A:

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A: given, x = 0.1 uf = 600 kJ/kg ug = 3200 kJ/kg

Q: 2. An ideal gas (Cv= 5/2R) with a pressure of 5.5 atm and a volume of 25 L has a temp of 525K. It…

A: Given data, Gas is an ideal gas. Value of R = 0.287 kJ/kgK Cv value is Cv=52RCv=52×0.287Cv=0.7175…

Q: sidered

A: given:T1=500KP1=3barP2=Patm=1.013bar

Q: 35 - What is the temperature of refrigerant 134a with a pressure of 1400 kPa and an enthalpy of…

A:

Q: Specific heat value at constant pressure (c_p) is function of temperature and given as 1/T where T…

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A:

Q: Calculate the energy requirement to raise the temperature of 1 kg of water from 60 ° C of water to…

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A: Given data as per question Volume of refrigerant =30 liters =0.03 m3 Mass of refrigerant =5 kg As…

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A: Given data: Steam pressure (P) = 500 kPa Temperature (T) = 400o C  Use the steam table of…

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.