ρ stands for density symbol. ρ=m/V (where m represents the mass of matter and v represents the volume of matter).
Derivation formula: m = ρ× v; V=m/ρ.
Correlation formula: p=ρgh (where ρ stands for liquid density, G stands for gravitational acceleration, and H stands for liquid depth); F=G=mg=ρgV row =ρGV (immersion) (where ρ represents the density of liquid, g represents the acceleration of gravity, and v represents the volume of liquid displaced by the object).
other meaning
1, R=ρl/S (where ρ represents resistivity, l represents conductor length, and s represents conductor cross-sectional area).
2.ρ also represents the radius of curvature. Formula: normal acceleration a=v? /ρ (suitable for circular motion in curvilinear motion).
3.ρ(Rho) also represents a kind of protein, which helps to terminate the transcription of prokaryotes.
4.ρ also represents the polar diameter (in polar coordinate system) or the polar axis (in cylindrical coordinate system) away from the origin. The polar diameter is also commonly expressed by the letter R, but in order to distinguish it clearly from the polar diameter of the spherical coordinate system, the usual labeling is R for the spherical coordinate system and ρ for the polar coordinate system and the cylindrical coordinate system.
5. In the conversion of angle and radian, ρ is used to represent the second value corresponding to a radian, generally taking 206265.