DEFS. EXAM QUESTIONS AND
ANSWERS GRADED A+ 2026
System - ANS whatever we want to study
Surroundings - ANS everything external to the system
Boundary - ANS system is distinguished from its surroundings
Closed System - ANS when a particular of matter is under study.
Control Volume - ANS A given region of space through which mass and energy may flow.
Mass may cross the boundary of a control volume.
Property - ANS is a macroscopic characteristic of a system to which a numerical value can be
assigned
State - ANS the condition of a system as described by its properties
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, Process - ANS is a transformation from one state to another
Extensive Property - ANS Depends on the size or extent of a system.
its value for overall system is the sum of its values for the parts into which system is divided.
Intensive Property - ANS Independent of size or extent of the system
Equilibrium - ANS a condition of balanced maintained by an equality of opposing forces.
Specific Volume - ANS reciprocal of the density v=1/p volume per unit mass
Pressure - ANS Fnormal/Area
Temperature - ANS a physical property that determines when they will be in thermal
equilibrium.
Kelvin Scale - ANS absolute temperature scale whose unit of temperature is the kelvin(K) an
SI Base unit for temperature.
Rankine Scale - ANS -An absolute thermodynamic temperature scale with absolute zero that
coincides with the absolute zero of the kelvin scale
An English base unit for temperature
How to Solve Thermodynamic Problems - ANS 1. Known
2. Find
3. Schematic and Given Data
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