System Basics
Properties / States
Pressure
Energy
Work
100
This is defined as the specimen that is being studied
What is a System
100
These types of properties depend on mass.
What are extensive properties?
100
The pressure measured with respect to an absolute vacuum.
What is Absolute Pressure?
100
___________ Energy is the energy at a molecular level, independent of an external reference frame.
What is Microscopic?
100
The kind of work only present when the volume of the system is changing.
What is Boundary Work?
200
This system type has mass flowing through it.
What is an open system.
200
If you cut a system in half, these properties do not change.
What are intensive properties?
200
The force per unit area exerted on a surface by the air above it.
What is Atmospheric Pressure?
200
These are the two forms of Macroscopic energy.
What is Kinetic Energy and Potential Energy?
200
The value of n in an isothermal process.
What is n = 1?
300
This system type has a fixed amount of matter.
What is a closed system
300
For steady state, the change in temperature of a closed system depends on the direction of heat transfer. True or False?
What is False? In steady state, properties, such as temperature, do NOT change with time.
300
Fill in the blank. ____ = Patm - Pabs
What is Pvac?
300
With no insulation and a specific starting temperature, the system will approach this temperature.
What is the Surrounding temperature?
300
What work should be in a power cycle.
What is positive work?
400
This is everything external to the system.
What is the surrounding.
400
Specific volume is an intensive property, whereas volume and mass are extensive properties. True or False?
What is True?
400
The relationship between the density of the liquid and its height in a barometer.
What is an Inverse Relationship?
400
The total Potential energy, in kJ, of an object whose mass is 20 kg when it is located 20m below a datum level in a location where g = 9.4 m/s.
What is -3.76 kJ?
400
The equation that gives you the work of the system when n does not equal 1.
What is W = (PfVf-PiVi) / (1-n)?
500
This is the interface between the system and the surrounding.
What is the boundary.
500
The specific volume of a closed system containing 16kg of water in a container measuring 2m x 2m x 2m is:
What is 0.5m3/kg
500
The barometric reading at a given location is 750 mm Hg. A gage connected to a tank at this location reads 50 kPa. This is the absolute pressure of the tank (in kPa), if the density of mercury is assumed to be 13,600 kg/m3.
What is 150kPa?
500
This is the formula for Specific Total Energy.
What is Specific Kinetic Energy + Specific Potential Energy + Specific Internal Energy? e = (ke + pe + u)
500
The total work, in kJ, generated during an isothermal process where 5 kg of oxygen, initially at 250kPa is compressed to 500kPa and 0.2 m^3/kg.
What is -346.57 kJ?
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