state the properies of fluids
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- The term fluid includes both liquid and gases
- . The main difference between a liquid and a gas is that the volume of a liquid remains definite because it takes the shape of the surface on or in which it comes into contact, whereas a gas occupies the complete space available in the container in which it is kept.
- Compressibility: When pressure is applied on a fluid, its volume decreases. This property of a fluid is called compressibility.
- Specific Volume: It is the volume occupied by the unit mass of the fluid. Its unit is cubic meter per kg.
- Mass Density: It is the mass of the fluid per unit volume. It unit is kg per cubic meter.
- Specific Weight: It is the weight per unit volume of the fluid. This quantity depends on the gravitational force of the place where the fluid is kept. The units for it are newton per cubic meter.
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