Determine the change in internal energy for a 6cm cube of iron with a mass of 1.7kg as it is heated from 30°C to 450°C.

Q: 10 lbm of ammonia (MW = 17), is heated inside a cylinder equipped with a piston. The initial…

A: Draw the P-V diagram and the T-S diagram. Here, 1 is the initial state of the system and 2 is the…

Q: Gas at 70 bars gage pressure and 37.8°C is contained in a 12,900-cm3 cylinder. A piston compresses…

A: The gas gage pressure is = 70 barAtmospheric pressure is = 1.01325 barThe temperature is T1=37.8…

Q: A mass of 1.37 kg of air in a piston-cylinder device is heated from 20.6°C to 250.1°C. During the…

A: Data given-  m = 1.37 kg  P = 111.04 kPa  T1 = 20.6 + 273.15 = 293.75 K T2 = 250.1 + 273.15 = 523.15…

Q: A copper cylinder (c=390 J/kg K) with a mass of 75 g is placed in a furnace at a temperature of 312…

A: A copper cylinder   Ccu=390 J/kg K = 0.390 J/g K Mass of cylinder mcu= 75 g Temperature of furnace…

Q: 5.0 kg of steam at 0.7 MPa and 250°C enters a pipeline and flows steadily along it at constant…

A: By using the properties of steam table The enthalpy of the steam at the pressure of 0.7 MPa and…

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: A container with a volume of 5 m3 has nitrogen gas at a pressure of 500 kPa and a temperature of 300…

A: Given Data: The initial volume of the nitrogen gas is V1 =5 m3. The initial pressure of the…

Q: A constant volume container initially contains 13 kg of air at a temperature of 20 °C and a pressure…

A: ideal gas An ideal gas is a theoretical gas composed of many randomly moving point particles that…

Q: A reciprocating cylinder contains water at a density of 0.01019 kg / liter at a pressure of 0.8 mpa.…

A: Given   Density = 0.01019 kg / liter                = 10.19 kg/m3 pressure = 0.8 MPa Find     The…

Q: A mass of 5 kg of saturated water vapor at 300 kPa is heated at constant pressure until the…

A:

Q: A group of 50 persons attend a secret meeting in a room which is 12 m wide by 10 m long and a…

A:

Q: Carbon Dioxide (CO2) is contained within a vertical piston-cylinder assembly. The piston has a mass…

A: Given data  Mass of piston = 75 kg Diameter of piston = 0.25 m Initial volume = 0.25 m^3 Final…

Q: 10 lbm of ammonia (MW = 17), is heated inside a cylinder equipped with a piston. The initial…

A: m=10 lbm=4.53592 kgP1=63 psi=4.3437 barT1=50°F=283.15 KT2=100°F=310.928 K…

Q: Water having a mass of 500 Ib is cooled from 70°F to a final temperature of 32°F. Calculate the…

A: Given:m=50 lbT1=70°FT2=32°F

Q: 3. A room is to be heated by 1000 kg of a liquid contained in a tank placed in the room. The room is…

A: The mass of the liquid is m=1000 kg The final temperature of the liquid is Tf=25°C=298 K The heat…

Q: A certain gas is compressed from 100kPa and 200C to 800kPa and 5000C. The gas is then cooled at…

A:

Q: Air is contained in a piston-cylinder device at 600 kPa and 927°C, and occupies a volume of 0.8 m³.…

A: To findSketch the system showing the energies crossing the boundary and the P-V diagram for the…

Q: An insulated container is partly filled with oil. The lid of the container is removed, 0.107 kg of…

A:

Q: Determine the heat and work in kJ/kg of the polytropic expansion of steam from 2.8 MPa at 340°C to…

A: Given details: P1=2.8 MPaP2=0.76 MPaT1=340°CT2=200°C

Q: A closed cylinder is divided into two parts by a friction-free piston restricted from motion by a…

A:

Q: A rigid container (Figure) whose volume is unknown is divided into two parts by a partition. One…

A:

Q: Once upon a time, an engineering is conducting an experiment wherein he uses 10 moles of a gas. He…

A: Given data: n=10 molesP1=0.5 barT1=300 KT2=T∞=600 KCv=2.5RM=10 kgCV=1.5 kJ/kg⋅K

Q: Initially, a rigid tank contains 500L of water at 300°C. By volume, the tank contains 60% liquid and…

A: Qin+m1u1+m2u2-mfhf=0Qin=m2u2+mfhf-m1u1

Q: Determine the internal energy change for carbon monoxide, in kJ/kg, as it is heated from 312° K to…

A: Givencarbon monoxideT1=312 KT2=1456 K

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: Initially, a rigid tank contains 50OL of water at 300°C. By volume, the tank contains60% liquid and…

A:

Q: According to newton’s law of cooling, the rate at which a substance cools in air is directly…

A: Write the given values with the suitable variables. T0=30 °FT1=100 °FT2=75 °Ft1=15 minTi=80 °FTf=35…

Q: A rigid tank contains 10kg pure water vapor at 300°C and 10 bar. The tank is now cooled down to…

A:

Q: CO gas used in a piston cylinder assembly is compressed from 0.5 m3 to 0.1 m3 volume. The…

A: The given values are -V1=0.5m3 , V2=0.1m3P=4V2 kPa The work done is given by -…

Q: A solid container with a volume of 150 L at an initial pressure of 2MPa was filled with a kilogram…

A:

Q: calorimeter is 0.28 kg and it contains 0.4 kg of water at 17°C. Taking the specific heat copper as…

A: I

Q: The storage tank of the steam system contains 0.005 kg of steam at a pressure of 50 bar and 500°C.…

A: To find: The dryness fraction, the temperature of steam after cooling, the specific internal energy…

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.