Lect 14 accounting

# Lect 14 accounting - Chapter 17 Engineering Accounting...

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Chapter 17 Engineering Accounting

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Physical Variables Physical variable : quantity, property, or variable that can be measured or calculated by multiplying or dividing other variables. Examples: mass, density, electrical conductivity, charge, kinetic energy, concentration
Classifying Extensive Properties Physical properties can be classified as either extensive or intensive. An extensive property depends on the size of the system. Examples: mass, volume, energy, money, momentum, charge ROT: If double size of system, get change. Some extensive properties can be counted in Accounting and Conservation Equations.

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An intensive property does NOT depend on the size of the system. Examples: mass fraction, temperature, pressure, concentration, density ROT: If double size of system, get NO change. Intensive properties canNOT be counted in Accounting and Conservation Equations.
Example Suppose you have developed a process for producing a high-strength polymer.

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