The First Law of
Thermodynamics
PHYSICS 2
,Thermodynamic System and Process
A thermodynamic system is any collection of object
that can be regarded as a unit and has the potential
to exchange energy with its surroundings
A thermodynamic process refers to any change that
a system undergoes from one equilibrium state to
another.
The series of states that a system undergoes during a
process is called the path of the process.
, The State of a System and State Variables
• The state of a system refers to its Kinetic energy
conditions which can be
STATE VAR IAB LE S
described completely by its Potential energy
properties.
Position
• State variables refer to the Velocity
quantities that are used to
describe the state of a system. Pressure
Temperature
Internal energy
Thermodynamics
PHYSICS 2
,Thermodynamic System and Process
A thermodynamic system is any collection of object
that can be regarded as a unit and has the potential
to exchange energy with its surroundings
A thermodynamic process refers to any change that
a system undergoes from one equilibrium state to
another.
The series of states that a system undergoes during a
process is called the path of the process.
, The State of a System and State Variables
• The state of a system refers to its Kinetic energy
conditions which can be
STATE VAR IAB LE S
described completely by its Potential energy
properties.
Position
• State variables refer to the Velocity
quantities that are used to
describe the state of a system. Pressure
Temperature
Internal energy
