Pj Problems - Overview
The Number Line
7 Spaces Of Interest - Overview
Triadic Unit Mesh
States Of Matter
COHN - Natures Engineering Of The Human Body
The Human-Body Systems
Faith, Love, Charity
Air is a mixture of gases constituted mostly by nitrogen and oxygen. Often it is necessary to expand or compress air. Isothermal expansion or compression; and adiabatic expansion and compression are frequently encountered.
(a) When is an expansion or compression Isothermal?
(b) When is an expansion or compression adiabatic?
(c) 165 cubic feet of air at a pressure of 15 psi (pounds per sq in) is compressed adiabatically to a pressure of 80 psi. What is the new volume of the air?
(d) Suppose the volume of air in (c) is compressed isothermally. What will be the volume of air after compression?
The string can be grouped as a force problem or a volume problem.
It is grouped as a volume problem since we are calculating compressed volume : S7P1A15 (containership-volume).
Pj Problem of Interest is of type force (force-push).
(a) An expansion or compression of air at constant temperature is isothermal
(b) An expansion or compression of air without transmission of heat to or from it, is adiabatic
(c) Formula of interest:
V2 = V1(P1/P2)γ. Where:
V1 = volume before compression
P1 = pressure of V1
V2 = volume after compression
P2 = pressure of V2
γ = adiabatic index = Cp/Cv
Cp = heat capacity of air at constant pressure
Cv = heat capacity of air at constant volume
So, V2 = 165(15/80)0.71 = 50 cubic ft.
(d) There is no adiabatic index for isothermal compression
So, V2 = 165(15/80) = 31 cubic ft.
The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
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Ordinary Differential Equations (ODEs)
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Newton And Fourier Cooling Laws Applied To Heat Flow Boundary Conditions
Derivation Of Heat Equation For A One-Dimensional Heat Flow
The Universe is composed of matter and radiant energy. Matter is any kind of mass-energy that moves with velocities less than the velocity of light. Radiant energy is any kind of mass-energy that moves with the velocity of light.
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How Matter Gets Composed
How Matter Gets Composed (2)
Molecular Structure Of Matter
Molecular Shapes: Bond Length, Bond Angle
Molecular Shapes: Valence Shell Electron Pair Repulsion
Molecular Shapes: Orbital Hybridization
Molecular Shapes: Sigma Bonds Pi Bonds
Molecular Shapes: Non ABn Molecules
Molecular Orbital Theory
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