a branch of physical science which deals with the mechanics of liquids and gases and is based on the same fundamental principles that are in the mechanics of solid

is the study if mechanics of fluids at rest

deals with the velocities and streamlines without considering forces of energy

concerned with the relations between velocities and accelerations and the forces exerted or upon fluids in motion.

are the substances capable of flowing. They possess particles which easily move and change their relative position without separation of the mass, and they offer practically no resistance to change in form.

one in which there is no friction nor viscosity.

are fluids which have little resistance to change either in form or volume and occupies all the space in which it is contained

are fluids which offer great resistance to change in volume and occupies a definite portion in which it is contained

is a system in which working substance does not cross its boundaries but energy crosses its boundaries

is a thermodynamics system in which both the working substance and energy are crossing its boundaries. An example of which is a pump or compressor being cut from the suction point to the discharge side.

thermodynamic system in which neither the mass (working substance) nor energy crosses its boundaries, and completely not affected by the surrounding conditions.

are thermodynamic properties that are independent of the mass of the substance in the system.

are thermodynamic properties that are dependent upon the mass of the substance in the system. These properties are total values.

are properties that are considered for a unit mass, and are intensive by definition Example: specific volume, specific internal energy, or specific enthalpy.

is a measure of a physical variable (without numerical values),

is a way to assign a number or measurement to that dimension

is the absolute quantity of matter in substance or body

is the force of gravity on the body and could be determined by a spring scale

is an intensive thermodynamic property that is usually used to determine the mass of the substance or system.

s the volume of a unit mass substance; it is also defined as the reciprocal of density

is the force of gravity per unit volume of a substance

is the ratio of the specific weight of a certain substance to that of the specific weight of water at standard condition.