Αποτελέσματα Αναζήτησης
Characteristics of Fluids. Liquids and gases are considered to be fluids because they yield to shearing forces, whereas solids resist them. Like solids, the molecules in a liquid are bonded to neighboring molecules, but possess many fewer of these bonds.
Specific weight has units of weight per unit volume, so its value depends on acceleration under gravity or “g.” The units of specific weight are N/m (i.e., N m ) in the SI system or lb/ft (i.e., lb ft ) the USC system.
Molecular weights can be used to calculate Specific Gravity if the densities of the gas and the air are evaluated at the same pressure and temperature.
Specific gravities of liquids like alcohol, oils, benzene, water and many more.
Key Equations. Summary. 14.1 Fluids, Density, and Pressure. A fluid is a state of matter that yields to sideways or shearing forces. Liquids and gases are both fluids. Fluid statics is the physics of stationary fluids. Density is the mass per unit volume of a substance or object, defined as ρ = m V ρ = m V. The SI unit of density is kg/m 3.
Learning Objectives. By the end of this section, you will be able to: State the different phases of matter. Describe the characteristics of the phases of matter at the molecular or atomic level. Distinguish between compressible and incompressible materials. Define density and its related SI units.
Do it yourself: Determine the units for density, specific weight, and temperature for the equations above. Determine the percent error for these equations (by comparing results to tabulated values)
