It is the total energy of a flowing fluid on a unit-mass basis.

Q: of 2 kg in a closed system undergoes three processes in series: Process 1-2: isochoric process from…

A: Given data p1 = 1 bar, V1= 4 m^3 P2 = 2 bar V3 = 2 m3 V4 = 1 m3 Mass of gas (m) = 2 kg

Q: If the density of liquid is 950 kg/m3, the specific volume of that liquid is      a.   4.105…

A:

Q: The rate of energy transfer from a system by radiation is higher in vacuum than in the atmosphere.…

A: The transfer of heat works on the principle of flow of heat and the temperature. Temperature…

Q: A closed system consisting of 10 Ib of air undergoes a polytropic process from p1 = 80 lbf/in?, v1 =…

A:

Q: Consider the flow of air through a wind turbine whose blades sweep an area of diameter D (in m). The…

A:

Q: Heat transfer occurs whenever there is a ____ difference between two substances. a) volume b)…

A: Energy transfer is movement of energy from one place to another place. And there should be a…

Q: Torque is the rotational equivalent of   kinetic energy     force    linear momentum…

A: Correct answer: 2. force

Q: A change of the system energy, AE, can be: a) positive, b) negative, c) of any sign or zero.

A: The first law of thermodynamics states that the change in internal energy of a system equals the net…

Q: Heat is negative when energy is transferred to a system from its environment

A: Correct option is:

Q: A gas with a density of 1.0 lb/ft3 weighs 4.0 lbf on the Moon, where the acceleration of gravity is…

A:

Q: the pressure at state 2, in kPa b) the temperature at state 3, in K c) the thermal efficiency of the…

A: GivenP1=138 kPa               T2=455kT1=280 k                    v31.4v2m=0.5 kg…

Q: When the system is completely isolated from its surroundings so that there is no heat transfer, this…

A: Open thermodynamic system is a system in which both energy and mass can cross the boundary of the…

Q: Why is work done a scalar quantity?

A: Physical work is obtained as dot product of force and displacement. Since force and displacement are…

Q: Extensive property of a system is one whose value *

A: Their are two property : Intensive  Extensive Extensive property are those which changes with amount…

Q: If the energy crossing the boundary of a closed system is not heat, it must be work?

A: Heat and work are path-dependent properties. It cannot be stored. If the energy is crossing the…

Q: Explain why work is not a property of the system.

A: In Thermodynamics, work is defined as a boundary phenomenon through which energy is interacted…

Q: Thermal mass is a property of the mass of a building which enables it to store:

A: Thermal Mass: The ability of a material to absorb and store heat or thermal energy is a Thermal…

Q: As shown in figure below, 5 kg of steam contained within a piston–cylinder assembly undergoes an…

A: Given, mass of steam, m=5kginternal energy of steam at state1,  U1=2709.9KJ/kgInternal energy of…

Q: The heat transfer is not constant when

A: The heat transfer through a material depends on the cross sectional area, thermal conductivity,etc.…

Q: For ideal gases, .... is a function of temperature only   a) pressure b) specific volume c) density…

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Q: A 'wind' is simply a flow of huge amount of air, usually from a high pressure area to a low pressure…

A: Given:- Wind flow To find:- True or false that wind flows from higher pressure area to lower…

Q: When energy in the form of heat is added to a body, it is stored as heat. True

A: When the energy in the from of heat is added to the body, then this energy increases the internal…

Q: Describe the difference between specific volume expressed on a mass basis and a molar basis.

A: Specific volume on the mass basis is Specific volume is defined as the ratio between the volume to…

Q: 1. For a closed system, the difference between the heat added to the system and the work done by the…

A:

Q: The rotational moment is the product of angular acceleration and

A: Rotational moment is nothing but the torque.  Torque : It is nothing but moment of force that force…

Q: Heat energy is the external energy present in a system by virtue of its temperature difference with…

A: This question is from heat transfer.

Q: In the rotational frame, work done between two instances of rotational states is nothing but the…

A: The overall work done to turn a rigid body through a point almost a fixed pivot is the sum of the…

Q: An open system has a mass transfer across its boundaries, and the mass within the system is not…

A: It is required to provide the definition of open system.

Q: A town has a 1.4-million-gallon storage capacity water tower. If the density of water is 62.4 lb/ft3…

A:

Q: In rectilinear motion of a particle, the work is equal to the change in the .kinetic energy of the…

A: Work energy principle for rectilinear motion, For particle if it performs rectilinear motion under…

Q: It is the ratio of the change of the internal energy to the change of temperature       a. Specific…

A: As per given question  It is the ratio of the change of the internal energy to the change of…

Q: Given: Four masses m, m, m, and m, are 300 kg, 400 kg, 320 kg, and 340 kg respectively. The…

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Q: In dynamics, the friction force acting on a moving object is always

A: The given question is related with mechanics . When body does not move if force applied then it mean…

Q: The flow of energy into and out of a system is known as

A:

Q: The figure belows shows an object whose mass is 25 lb attached to a rope wound around a pulley. The…

A: Given, Mass hanged to rope = m = 25 lb Radius of pulley = R = 3 in = 0.25 ft Velocity of mass = v =…

Q: = Apparent body weight Body density * whole body volume - fluid density* submerged part body volume…

A:

Q: The rates of energy that can be transferred from one system to another is due to difference in the

A: 1) The rates of energy that can be transferred from one system to another is due to difference in…

Q: g. The difference between extensive and intensive properties.

A:

Q: __________are a systems in which there is a transfer of mass across the boundaries

A: A thermodynamic system is a body of matter and/or radiation confined by walls in space with certain…

Q: In any process where heat is added to the system and work is done by the system,the net energy…

A: This question is from thermodynamics fist law.

Q: If the net work done is positive, the kinetic energy of a moving object

A: From the first law of thermodynamic which is the law of conservation of energy according to which…

Q: The pressure of a saturated vapor is a function of: 1. only quality 2. only specific volume…

A:

Q: The system total energy is always conserved, when (mark all): a) a closed system undergoes a…

A: First law of thermodynamics states that energy can neither be created nor destroyed, rather it…

Q: Extensive property of a system is one whose value

A: Extensive property : It is the property which depends upon the system size .   Intensive property :…

Q: Closed system can exchange energy and matter

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Q: The energy possessed by a body by the virtue of its motion is called ______

A:

Q: The work associated with a moving boundary is called ______________.

A: The work associated with moving boundary is associated with the expansion and compression of a fluid…

Q: For a submerged curved surface, the vertical component of force is equal to O a. Weight of the…

A: For a submerged curved surface, the vertical component of force is equal to O a. Weight of the…

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.