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- Specific Gravity of gases is normally calculated with reference to air - and defined as the ratio of the density of the gas to the density of the air - at a specified temperature and pressure. The Specific Gravity can be calculated as SG = ρ gas / ρ air (3)
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How is atmospheric pressure related to gravity?
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How does gravity affect a region?
where p 1 is the external applied pressure, ρ is the density of the fluid, Δh is the difference in height of the static liquid, and g is the acceleration due to gravity. Pascal’s Law explicitly determines the pressure difference between two different heights (or depths) within a static liquid.
- 14.3: Fluids, Density, and Pressure (Part 2 ... - Physics ...
Where p is the pressure at a particular depth, p 0 is the...
- 4.3.5: Gravity Variations Effects on Pressure and Density
Fig. 4.12 The varying gravity effects on density and...
- 14.3: Fluids, Density, and Pressure (Part 2 ... - Physics ...
Dec 8, 2020 · Atmospheric air pressure occurs because the atmosphere is made of stuff that has mass, and therefore has weight due to gravity. The pressure of an atmosphere on a horizontal surface represents the total mass of a column of atmosphere from that surface all the way up into space.
Where p is the pressure at a particular depth, p 0 is the pressure of the atmosphere, \(\rho\) is the density of the fluid, g is the acceleration due to gravity, and h is the depth. Figure \(\PageIndex{2}\): The Three Gorges Dam, erected on the Yangtze River in central China in 2008, created a massive reservoir that displaced more than one ...
Pressure due to the weight of a liquid of constant density is given by [latex] p=\rho \,gh [/latex], where p is the pressure, h is the depth of the liquid, [latex] \rho [/latex] is the density of the liquid, and g is the acceleration due to gravity.
Fig. 4.12 The varying gravity effects on density and pressure. Until now the study focus on the change of density and pressure of the fluid. Equation (11) has two terms on the right hand side, the density, ρ ρ and the body force, g g. The body force was assumed until now to be constant.
Where ρ is the density of the fluid, g is the gravitational field strength and h is the depth of the object in the fluid. Consider a cylinder which is submerged in water. The bottom of the cylinder is deeper down in the fluid therefore h is larger than it is for the top of the cube.
For instance, the density of aluminum is 2.7 in g/cm 3 g/cm 3 (2700 in kg/m 3 kg/m 3), but its specific gravity is 2.7, regardless of the unit of density. Specific gravity is a particularly useful quantity with regard to buoyancy, which we will discuss later in this chapter.
