Q19: A stationary mass of gas is compressed without friction from an initial state of 2 m3 and 2 × 105 N/m2 to a final state of 1 m3 and 2 × 105 N/m2, the pressure remaining the same. There is a transfer of 360 kJ of heat from the gas during the process. How much does the internal energy of the gas change

Q: Q1: (A) kg of air is compressed causing its temperature to increase from 25K° to 100K°. If the…

A: Given dataTemperature of the air is increasing from 25K to 100KSpecific heat of air Cp(T) =…

Q: 300 kJ of heat flow by conduction from the outside to the inside cold storage in one hour. If the…

A: As per question, Heat flow by conduction from outside to the inside in one hour is 300KJ. Heat…

Q: A gas is compressed from an initial volume of 5.75 LL to a final volume of 1.24 LL by an external…

A:

Q: Q3/ A piston-cylinder contain 5 kg of steam assembly undergoes an expansion from state 1, where the…

A: Given Data m=5 kg u1=2709.9 kJ/kg u2=2656.6 kJ/kg Wpw=-18.5 kJ Q=80 kJ

Q: A mass of 6.7 kg of steam is contained within a piston-cylinder assembly. The steam undergoes an…

A:

Q: A gas undergoes a constant pressure process at P = 2.5 kPa where the volume increases from 500 I to…

A: Given data: P=2.5 kPaV1=500 l=500×10-3m3V2=1500 l=1500×10-3m3Q=3000 JNeed to determine the change in…

Q: 1. When a stationary mass of gas was compressed without friction at constant pressure, its initial…

A: Given data: For initial state Volume, V1=0.4m3 Pressure, p1= 0.105MPa   For final state Volume,…

Q: 4. A compressor draws in 500 of air whose density is 0.079 min and discharges it with a density of…

A: Given data: The drawing rate of compressor is V = 500 ft3/min. The density of air at the time of…

Q: Q19: A stationary mass of gas is compressed without friction from an initial state of 2 m3 and 2 x…

A: Given data  Pressure (P) = 2*105 N/m2 Initial Volume (V1) = 2 m3 Final Volume (V2) = 1 m3 Heat…

Q: . Consider an engine that has a piston in the cylinder that can ignore friction. The bore (diameter)…

A:

Q: An example of a force is: The mass of an object. The action of one body on another. A scalar…

A: In the given problem the example of a force is the action of one body on another body  And the force…

Q: A piston-cylinder assembly contains 6kg of water that undergoes a series of processes to form a…

A:

Q: A quantity of air at a pressure of 105 kN/m² and temperature of 25 °C is compressed according to the…

A: Given data: Pressure P1=105 kNm2 Temperature T1=25°C=25+273=298 K PV1.33=Constant Initial Volume…

Q: Nitrogen with a mass of 1.5 kg expands at a constant pressure. The initial pressure and temperature…

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Q: 2. a.) Find the work done by a 1-kg hydrogen on a piston when this gas compresses isothermally at…

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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: As per given question we have defind the  internal energy of gas change

Q: This fixed-mass system undergoes an isothermal, quasi-equilibrium process from state 1 to state 2.…

A:

Q: 3. A 750 liter rigid tank (1 liter = 0.001 m³) initially contains water at 250 (°C), which is 50%…

A: First we make calculations to find the exact initial mass of liquid and steam in the mixture

Q: In a quasi-static isobaric expansion, 540 J of work are done by the gas. The gas pressure is 0.90…

A: From the first law of thermodynamics - Q2-1 = W2-1 + ∆UQ2-1 = 540 + 70Q2-1 = 610 J

Q: A compressor draws in 500 min of air whose density is 0.079 and discharges it with a density of…

A: Given that, Volume flow rate of air in compressor at entry, v˙=500 ft3/minDensity of air at…

Q: 6. The followings are the inlet working at different conditions. 33 A C (c) How can you relieve the…

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Q: A fixed mass of gas undergoes changes of pressure and volume as shown below. R. P

A: Givenalong path PQRQPQR=8kJWPQR=3kJalong path PSRQPSR=?WPSR=1kJ

Q: 1 - Consider 2 kg of water in a cylinder blocked by a piston at 20 C, 200 kPa. Water is heated and…

A: The mass of water is m=2 kg. The initial pressure on the piston is P1=200 kPa. The initial…

Q: A high altitude chamber chamber , the volume of which is 30m3 , is put into operation by reducing…

A:

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.