hey!um why is this not giving me an answer?jk. i no y!
I assume you mean dansity of a fluid because fluid density changing proportionally to temperature and to pressure change by the equation:ρ1 = [ ρ0 / (1 + β (t1 - t0)) ] / [1 - (p1 - p0) / E]Check out the website in the related link
Density = mass/volume so it is related to mass and volume. And Volume is related to temperature and pressure, so it is related to those as well.
For a given volume and pressure, the mass of the air contained in that volume (density) will decrease as the temperature increases.
Scroll down to related links and look at "Density of air - Wikipedia". See there: Importance of temperature.
Both pressure and volume of any gas are directly, linearely proportional to temperature in Kelvin, that is degree Celsius + 273.13. Density is not directly related to temperature, it is related to mass and volume.
Sorry, the atmospheric pressure has really nothing to do with the speed of sound at 0c, but he temperature is very important Scroll down to related links and read the short article "Speed of sound - temperature matters, not air pressure". The air pressure and the air density are proportional to each other at the same temperature.
Salinity and Density are related because they are both measures of the amount
Hydrostatic head (ft) multiplied by the fluid density, and divided by 2.31 equals PSI. The fluid density of water is 1 at normal temperature (20C).
The static air pressure p_ and the density ρ of air (air density) are proportional at the same temperature. The ratio p_ / ρ is always constant, on a high mountain or even on sea level altitude. That means, the ratio p_ / ρ is always constant on a high mountain, and even at "sea level". The static atmospheric pressure p_ and the density of air ρ go always together. The ratio stays constant. When calculating the speed of sound, forget the atmospheric pressure, but look accurately at the very important temperature. The speed of sound varies with altitude (height) only because of the changing temperature there. See related link.
The density of water increase from 100 oC to 4 oC (here is a maximum); after this temperature the density decrease.
as pressure increases, temperature increases
Higher temperature air is less dense.Less-Dense air has a higher temperature