Pressure cookers, in general, maintain a gage pressure of 2 atm (or 3 atm absolute) inside. Therefore, pressure cookers cook at a temperature of about 133°C instead of 100°C, cutting the cooking time by as much as 70 percent while minimizing the loss of nutrients. The newer pressure cookers use a spring valve with several pressure settings rather than a weight on the cover. A certain pressure cooker has a volume of 6 L and an operating pressure of 75 kPa gage. Initially, it contains 1 kg of water. Heat is supplied to the pressure cooker at a rate of 500 W for 30 min after the operating pressure is reached. Assuming an atmospheric pressure of 100 kPa, determine the temperature at which cooking takes place.

Q: In adiabatic process, the system has Q=max value W=0 O Q=0 O U=0 * A vertical piston-cylinder device…

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Q: during the process from the initial temperature of (30×1.6)°C down to the final temperature of 20°C.…

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Q: Use the Ideal Gas Law to show how pressure and temperature are related in the case of two footballs…

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Q: What is the change in internal energy of air (assumed to be an ideal gas) cooled from 1000°F to…

A: given data  Ideal gas m = 1 kg T1 = 1000°F T2 = 200°F For ideal air  Cv = 1.003 KJ/KgK So…

Q: A piston-cylinder assembly contains air at a temperature of 527°C and a volume of V1 = 2 m³. The air…

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Q: It is a hot day in Atlanta and you and your friends bought an ice cream maker. The unit consists of…

A: To obtain the solution of the above question, we will apply the 1st law of thermodynamics and is…

Q: Given the temperature and pressure of an ideal gas, how would you find the specific volume and…

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Q: the work done (W12) in (kJ) is Below 10 O Between 10 and 30 O Between 30 and 50 O Between 50 and 70…

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Q: A well-insulated copper tank with a mass of 13 kg contains 4 kg of liquid water. Initially,…

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Q: A vessel contains water. The conditions of the system are: volume of the vessel: V = 0.10 m3…

A: Given data  volume = 0.1 m^3 Pressure = 200 kpa Mass = 5 kg Specific volume  vf = 0.001061 m^3/kg…

Q: ecify whether the steam is -wet -dry saturated -superheated for the following conditions. Prove your…

A: To determine the state of steam at given conditions.

Q: A vessel contains water. The conditions of the system are: • volume of the vessel: V = 0.10 m³ •…

A: Given data :- volume = 0.1 m^3 Pressure = 200 kpa Mass = 5 kg Specific volume  vf = 0.001061 m^3/kg…

Q: A dividing wall divides an insulated container into two compartments as shown in the figure.…

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Q: A mixture of liquid and gaseous water is a pure substance, but a mixture of liquid and gaseous air…

A: As there are some chemicals present in the gaseous air which are not soluble in the liquid.

Q: A vessel contains water. The conditions of the system are: • volume of the vessel: V = 0.1 m³ •…

A: Given data :- volume = 0.1 m^3 Pressure = 200 kpa Mass = 5 kg Specific volume  vf = 0.001061 m^3/kg…

Q: In a central air-conditioning system, 72 kg per hour of air at 15 degree celsius and 1.1 bar enters…

A: Given data: mass flow rate of air = 72 kg/hr = 0.02 kg/s Temperature of air = 15oC =15+273=288 K…

Q: 3 mol of air are contained in a piston-cylinder system with a surface of S = 5 m², loaded with a…

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Q: Determine the internal energy of steam in BTU if the mass is 10 lbs, pressure is 645.43 kpa,…

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Q: Solve for the heat added (in Btu) in the process

A: The mass of the water mw=5 kg The initial pressure of water P1=200 kPa The initial specific volume…

Q: Analyse an industrial thermodynamic system (refrigeration systems) in terms of work done, from first…

A: Analyzing an industrial thermodynamic system such as a refrigeration system in terms of work done…

Q: A rigid tank of 20ft contains air at 100psia and 70°F. The tank is equipped with a relief valve that…

A: V1 = 20 ft3 = 0.566337 m3 P1 = 100 psia = 689.476 Kpa T1 = 70°F = 294.261 K  P2 = 125 psia = 861.845…

Q: A rigid tank whose volume is unknown is divided into two parts by a partition. One side of the tank…

A: Given:The initial temperature of the ideal gas is T1=917°C.The initial pressure of the ideal gas is…

Q: A vessel contains water. The conditions of the system are: volume of the vessel: V = 0.10 m3…

A: Find , temperature in the tank.

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Q: Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 250 lb/in²…

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Q: Problem 08.034 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS - Refrigerant Constant Pressure…

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Q: At 1:00 PM, a thermometer reading 80°F is taken outside where the temperature is constant. At 1:05…

A: Given: At 1:00pm T=80 After t=5mins, T=35 Now after 40 mins T-Ts=15 To find:- Time taken

Q: The instruction booklet for your pressure cooker indicates that its highest setting is 11.3 psipsi .…

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Q: While the piston is pinned, a cylinder with a volume of 0.05 m3 contains 200 kPa pressure and 300 K…

A: Given: Initial temperature (T1)=300KInitial pressure (P1)=200kPaInitial volume (V1)=0.05m3Pressure…

Q: A piston-cylinder system has a mass of piston of 900 kg and an area of piston equals to 0.00981 m².…

A: Given data: Mass of the Piston m = 900kg Area of the piston = 0.00981 m2 mass of the water = 1 kg…

Q: A metal tank contains air at 20 C and 400 kPa. The tank volume is 5 m³. It is connected through a…

A: given; →tank 1st;→temperature(T1)=200c=293K→pressure(P1)=400KPa→volume(V1)=5m3→for tank 2;→mass of…

Q: Refrigerant 134a expands in a piston-cylinder assembly from p₁ = 200 lb/in² and T₁ = 140°F to p2 =…

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Q: A vessel contains water. The conditions of the system are: volume of the vessel: V = 0.10 m3…

A: Write the given data. V=0.10 m3m=5 kg

Q: The volume of the radiator used in the heating installation of a system is 20 liters. When the…

A: Given-Data: Volume, V=20 litre=0.020m3Inlet pressure,p1=120kPaExit Temperature,T2=30°C To-Determine:…

Q: 2 lbm of refrigerant-134a occupy a 3 ft^3 system at 50 psia. In what state is the refrigerant…

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Q: Air is contained in a vertical piston–cylinder assembly fitted with an electrical resistor. The…

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Q: An ideal gas in a leak tight cylinder-piston assembly undergoes an isobaric compression at a…

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Q: Five pounds of mass of water are contained within a cylinder-piston system. The initial temperature…

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Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.