In a conservation of mass problem, what can be concluded about the time rate of change of mass in the control volume if the net rate of mass flow through the control surface is positive?

Q: How is a steady-flow system characterized?

A: Steady flow means that the rates of flow of mass and energy across the surface are constant. In most…

Q: A 0.4m³ rigid tank contains air at 37 °C and pressure 250 kPa. (R= 0.2968 kJ/kg-K) The specific…

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Q: A 1.8 kg/s of steam expands in a turbine producing 550 kW of power output. The steam enters at a…

A: Given data: W˙=550 kWm˙=1.8 kg/sv1=18 m/sv2=70 m/sh1-h2=400 kJ/kgz1=900 mmz2=0 Need to determine the…

Q: A 1.8 kg/s of steam expands in a turbine producing 550 kw of power output. The steam enters at a…

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Q: velocity = 10 m/s inside pipe diameter = 6 cm Assuming all velocities are constant, determine: oil,…

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Q: Saturated water vapor at 150°C (enthalpy h = 2745.9 kJ/kg) flows in a pipe at 35 m/s at an elevation…

A: Given data: Temperature of saturated vapour, T = 150°C Enthalpy, h = 2745.9 kJ/kg Velocity, V = 35…

Q: When is the flow through a control volume steady?

A: The process in which fluid flowing through the control volume flows steadily, then it is termed as…

Q: HOTE 7 LIT UAD CAME 1.9 A mass of gas at an initial pressure of 28 bar, and with an internal energy…

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Q: what are the specific volume, internal energy, enthalpy, and entropy of steam at 1.50 Mpa and 254…

A: Given data:

Q: 1. Refrigerant 134-a enters an adiabatic compressor as saturated vapor at 0 °C and is compressed to…

A: Given data: R-134a refrigerant enters an adiabatic compressor as: Saturated vapor at T1=0 °C and is…

Q: The specific internal energy of helium at 300K and 1 atm. is 3800 J/mol. The specific molar volume…

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Q: A fan is used to transport CO2 gas (MW = 44 g/mol) gas at rest @ 700mmHg. At the discharge end, the…

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Q: Under steady-flow conditions, the fluid properties at an inlet or exit remain constant (do not…

A: During a steady flow extensive(dependent on mass) or intensive(independent on mass) property of…

Q: (i) Define mass and volume flow rates. How are they related to each other?

A: Mass – Mass is a quantitative measure of inertia and it is the fundamental property of all matter.…

Q: Steam enters an isothermal compressor at 400 C and 100 kPa. The exit pressure is 10 MPa. Determine…

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Q: A hot stream and a cold stream of helium enter a mixing chamber. Their temperatures are 800°C and…

A: Given that, Temperature of hot stream, Th=800 °C,Temperature of cold stream, Tc=20 °C,Pressure of…

Q: Air with an initial density of 1.285 kg/m³ is passed through a compressor with an inlet diameter of…

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Q: LA gas with a density of 0.232 kg/m³ flows at a velocity of 280 m/s through a cross-sectional area…

A: Given that ,Density of Gas , ρ=0.232 kgm3Velocity of Flow , v=280 msCross sectional area ,…

Q: Consider a device with one inlet and one outlet. If the volume flow rates at the inlet and at the…

A: As the system has only one inlet and outlet and the volume flow rates are considered to be same the…

Q: A 0.75-m3rigid tank initially contains air whose density is 1.18 kg/m3 The tank is connected to a…

A: Given: The volume of the rigid tank is V=0.75 m3. The initial density of the air in the tank is…

Q: Water at the initial pressure of 1 atm and temperature of 15C is flowing through a pump. Final…

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Q: A gas with a density of 0.232 kg/m3 flows at a velocity of 280 m/s through a cross sectional area of…

A: Given data: The density of the gas is ρ=0.232 kg/m3 The velocity of the gas is v=280 m/s The cross…

Q: Steam at 500kPa and a quality of 90 percent occupied a rigid vessel of volume 0.3m³. Calculate the…

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Q: A desktop computer is to be cooled by a fan whose flow rate is 0.40 m3/min. Determine the mass flow…

A: mass flow rate : mass flow rate = density * volumetric flow rate = density * Area * Velocity

Q: A nozzle takes in steam with negligible velocity. and specific enthalpy. of 3·3 MJ/kg. The velocity…

A: Write the expression for SFEE.

Q: A pipeline carries a flow of 77.72 m /min of steam at 1.00 MPa and 20.09°C superheat. Determine the…

A: Volume flow rate of steam, V˙=77.72 m3/minSteam pressure, P=1.00 MPaSteam superheated by,…

Q: A 2-m3 rigid tank initially contains air whose density is 1.18 kg/m3 . The tank is connected to a…

A: Given: The volume of the rigid tank is V=2 m3. The initial density of the air is ρ1=1.18 kg/m3. The…

Q: A desktop computer is to be cooled by a fan whose flow rate is 0.40 m3/min. Determine the mass flow…

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Q: Air whose density is 0.078 Ib/ft^3 enters the duct of an air-conditioning system at a volume flow…

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Q: What is the mass flow rate in hot stream kg/s?

A: In a constant pressure process, the rate of heat transfer can be determined as the product of mass,…

Q: The air in a 5-m × 5-m × 3-m hospital room is to be completely replaced by conditioned air every 15…

A: Given: The time of the air replacement is t=15 min. The average air velocity in the duct is v=5 m/s.…

Q: Tank A has a volume of 100 L and contains saturated vapor R-134a at 32°C. When the valve is opened,…

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Q: Define the mechanisms of entropy transfer for a general system.

A: There are basically two forms in which entropy is transferred namely through heat transfer &…

Q: Q) Water flowing through a tube of 1.5 cm diameter is heated from 70°F to 88°F while the tube…

A: Given data, Diameter of the tube, d = 1.5 cm = 0.015 m Mean temperature of the water at the inlet of…

Q: The initial condition of air is at 452 K expands in a constant pressure non-flow process until the…

A: Given Data  Temperature, T=452K V1=V V2=3V P1=P2 (For constant pressure process) For Air  Cp=1.005…

Q: ater flows in a 5-cm-diameter pipe at a velocity of 0.75 m/s. The mass flow rate of water in the

A: D=5CM V=0.75m/s

Q: One pound of helium per second with an initial temperature of 200PE is allowed to expand with flow…

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Q: An ice tray contains 598 g of water at 0'C. Calculate the change in entropy of the wa- ter as it…

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Q: Carbon dioxide gas at 3 MPa and 500 K flows steadily in a pipe at a rate of 0.4 kmol/s. Determine…

A: Given The pressure of the carbon dioxide gas is P=3 MPa. The temperature of the gas is T=500 K. The…

Q: A 30 cm diameter pipe carries oil of 800 kg/m3 at 2m/s. At another section, the diameter is 20 cm.…

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Q: Define mass and volume flow rates. How are they related to each other?

A: Mass Flow rate⇒Mass flow rate is defined as the mass of fluid flowing per unit time. Mass flow rate…

Q: • 0.05 kg of Steam at 100 kPa, dryness fraction of 0.85 is heated at constant pressure to a…

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Fluid Kinematics

The branch of science that deals with objects which are either in motion or stationary are studied under the branch of classical mechanics. Fluid mechanics is a subcategory of classical mechanics that deals with the behavior of fluids at rest (fluid statics) or in motion (posing some velocity). In fluid kinematics, studies focus on the associated motion of fluid particles or groups of particles, and its associated parameters like displacements, velocity, and acceleration without concerning about the forces that caused the motion. All the laws of classical mechanics are applied in the study of fluid kinematics.