1. While the pressure remains constant at 689.5 kPaa, the volume of air changes from 0.567 m³ to 0.283 m?. Find the change of internal energy.

Q: Temperature of cooling chamber of refrigerator is kept at T1 = 280 K. If the surrounding temperature…

A: Given: The temperature of the cooling chamber is T1=280 K. The formula for the coefficient of…

Q: A piston cylinder contains 11kg of air at 20 degC and 300 kPa. It is now heated up in a constant…

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Q: Q2 (B)A constant pressure piston-cylinder assembly contain 0.2 kg of water as saturated vapor at 500…

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Q: A fluid changes state from p1 = 105 kPaa, V1 = 0.558 m3 to p2 = 690 kPaa, V2 = 0.057 m3; the…

A: Given data  P1 = 150 kPaa V1 = 0.558 m3  P2 = 690 kPaa  V2 = 0.057 m3  U1 = U2    To determine…

Q: Thermodynamics problem. Saturated water occupies a volume of 1.2m3 . Heat is added until it…

A:

Q: A stationary mass of gas is compressed without friction from an ini- tial state of 0.3 m' and 0.105…

A: First law of thermodynamics states that in a closed cycle, the sum of heat is equal to sum of work.…

Q: The pressure inside a diesel engine cylinder is 20 kPa, find the work done if the volume changes…

A: Given data: P=20 kPaV1=3.5 m3V2=5 m3 Need to determine the work done.

Q: Find the kinetic energy stored in car of 30 kg moving with velocity 24 m/s

A: Given data : Mass of car=m Velocity of car=V   To find : Kinetic energy

Q: A stationary mass of gas is compressed without friction from an ini- tial state of 0.3 m and 0.105…

A: Given Data:- V1=0.3 m3 P1=P2=0.105 MPa V2=0.15 m3heat transfer q= -37.6 KJ  (exothermic)

Q: Q4: Find the force when 60 kg of blood is given upward of about 0.1s, in a velocity nearly 1 m/s.

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Q: A pressure vessel contains water at 435.15.K with the vapor volume being one-fifth the total volume.…

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Q: A mass of gas is compressed in a quasi-static process from 80 kPa, 0.1 m³ to 0.4 MPa, 0.03 m³.…

A: As given in question, Initial pressure = P1 = 80 kPa Initial volume = v1 = 0.1 m3 Final pressure =…

Q: The energy required to raise the temperature of a unit mass of a substance by one degre, explain it.

A: The amount of energy that is required to raise the temperature of the unit mass of a substance by 1…

Q: A piston cylinder contains 22kg of air at 20 degC and 300 kPa. It is now heated up in a constant…

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Q: Find the internal energy and specific volume for nitrogen in a state where the temperature is 500°C…

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Q: mple 4.1 A stationary mass of gas is compressed without friction from an ini- tial state of 0.3 m…

A: First law of thermodynamics states that in a closed cycle, the sum of heat is equal to sum of work.…

Q: An object is dropped from a height of 14 m. At what height will it's kinetic energy and it's…

A: Given: kinetic energy= potential energy

Q: A- A rigid vessel of 5 m³ contain water in at a quality of 0.8 and a pressure of 2 MPa. If the…

A: Given data: ● The volume of the rigid vessel: V = 5 m3 (Note: Since the vessel is rigid, the…

Q: A steam turbine receives steam with a specific enthalpy of 31 17 kJ/kg at a rate of 5 kg/s. At the…

A: Givenh1=3117 kJ/kgm=5kg/sh2=2851 kJ/kg

Q: piston cylinder provides an 800 kPa on steam which has a quality of 0.95 and an volume of 1200 cm^3.…

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Q: Find the work posses for a carbon dioxide gas at 1,995.59 C in kJ/kg. (Use W = mRT)

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Q: Reservoir engineers transfer a crude oil with at 30 °C, and 9 kPa, and 200 m³ volume to tank by…

A: For solution refer below images.

Q: Q3: Two kilograms of nitrogen at 100 K, x =0.5 is heated in a constant pressure process to 300 K in…

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Q: A box shaped close system with a movable top contain water as working as fluid was kept a…

A: Here work done is given by W=P∆VW=P(Vfs-Vf)Here at T=293K and P=100 kPaSpecific volume=Vf=10-3…

Q: Don't we have to convert mass into weight in order proceed with the problem.

A: Given data: mass of man=75kg mass of crate =130kg coefficient of friction, shoe and ground=0.4…

Q: 3kg of Co2 expanded in a stationary piston cylinder through a polytropic process from 30 degree…

A: T1= 30+273= 303K, m=3kgP1=250KPa, P2=100KPan=1.45T2T1= 1002501.45-11.45=228.014KTotal Work, W=…

Q: A piston cylinder includes air with a pressure of 600 Kpa, a temperature of 290 K, and a volume of…

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Q: A stationary mass of gas is compressed without friction from an ini- tial state of 0.3 m' and 0.105…

A: First law of thermodynamics states that in a closed cycle, the sum of heat is equal to sum of work.…

Q: A piston - cylinder system is filled with air. Initially, the air is at 489 kPa and 26\deg C. The…

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Q: A constant-pressure piston/cylinder assembly con- tains 0.2 kg of water as saturated vapor at 400…

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Q: A piston/cylinder has a volume of 0.05 m3 and contains steam at 500 kPa with a quality of 90%. Heat…

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Q: Saturated steam is cooled at constant pressure (40 kPa) to a saturated liquid. Calculate the heat…

A: Given Data State 1:40 kPa, saturated vapor State 2:40 kPa, saturated liquid

Q: Reservoir engineers transfer a crude oil with at 30 °C, and 9 kPa, and 200 m³ volume to tank by…

A:

Q: Example 4.1 A stationary mass of gas is compressed without friction from an ini- tial state of 0.3…

A: First law of thermodynamics states that in a closed cycle, the sum of heat is equal to sum of work.…

Q: A mass of gas is compressed in a quasi-static process from 80 kPa, 0.1 to 0.4 MPa, 0.03 m³. Assuming…

A: As stated in the question, Initial pressure = P1 = 80 kPa Initial volume = v1 = 0.1 m3 Final…

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.