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N, or n, is the fourteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages, and others worldwide. Its name in English is en (pronounced / ˈ ɛ n / ), plural ens .
Ñ, or ñ ( Spanish: eñe, [ˈeɲe] ⓘ ), is a letter of the modern Latin alphabet, formed by placing a tilde (also referred to as a virgulilla in Spanish, in order to differentiate it from other diacritics, which are also called tildes) on top of an upper- or lower-case n . [1]
The newton (symbol: N) is the unit of force in the International System of Units (SI). It is defined as , the force which gives a mass of 1 kilogram an acceleration of 1 metre per second squared. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically his second law of motion .
Nitrogen is a chemical element; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System.
The number density (symbol: n or ρ N) is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space: three-dimensional volumetric number density, areal number .
About 68% of values drawn from a normal distribution are within one standard deviation σ away from the mean; about 95% of the values lie within two standard deviations; and about 99.7% are within three standard deviations. [6] This fact is known as the 68–95–99.7 (empirical) rule, or the 3-sigma rule .
N, the neutron number, the number of neutrons in a nuclide. N, in Brillouin zone, the center of a face of a body-centered cubic lattice. N, the physical quantity "rotation" in the International System of Quantities. n, for nano-, prefix in the SI system of units denoting a factor of 10 −9.
