Formula Symbols - N

Written by Jerry Ratzlaff on . Posted in Nomenclature & Symbols for Engineering, Mathematics, and Science

Formula Symbols

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N

SymbolGreek SymbolDefinitionEnglishMetricSIValue
$$ln$$ - natural logarithm - - -  -
$$w_n$$ - natural water content dimensionless -
$$T_n$$ - Neel temperature - - -  -
$$F_n$$ - net force $$lbf$$ $$N$$ $$kg-m-s^{-2}$$  -
$$NPSH$$ - net positive suction head $$ft$$ $$m$$ $$m$$  -
$$NPSHA$$ - net positive suction head available $$ft$$ $$m$$ $$m$$  -
$$NPSHR$$ - net positive suction head required $$ft$$ $$m$$ $$m$$ -
$$E_v$$ - neutron energy - - - -
$$F_n$$ - net positive or negative force $$lbf$$ $$N$$ $$kg-m-s^{-2}$$ -
$$NPSH_r$$ - net positive suction head required - - - -
$$\tau_n$$ tau net torque $$lbf-ft$$ $$N-m$$ $$kg-m^2-s^{-2}$$ -
$$m_n$$ - neutron mass $$lbm$$ $$kg$$ $$kg$$ $$1.674\;927\;498\;04(95)\;x\;10^{-27}$$ $$kg$$
$$N$$ - neutron number - - - -
$$G$$ - Newtonian constant of gravitation $$\large{\frac{lbf-ft^2}{lbm^2}}$$  $$\large{\frac{N - m^2}{kg^2}}$$  $$N-m^{2}-kg^{-2}$$ $$6.674\;30\;x\;10^{-11}$$ $$\large{\frac{N - m^2}{kg^2}}$$
- - Newton's law of cooling - - - -
$$F_g$$ - Newton's law of universal gravitation  $$\large{ \frac{ft}{sec^2} }$$  $$\large{ \frac{m}{s^2} }$$ $$m-s^{-2}$$ -
$$F$$ - Newton's second law $$lbf$$ $$N$$ $$kg-m-s^{-2}$$ -
$$\tau$$ tau Newton's second law for rotation $$lbf$$ $$N$$ $$kg-m-s^{-2}$$ -
$$F$$ - Newton's third law $$lbf$$ $$N$$ $$kg-m-s^{-2}$$ -
$$\tau$$ tau Newton's law of viscosity $$\large{\frac{lbf}{in^2}}$$ $$Pa$$ $$kg-m^{-1}-s^{-2}$$ -
$$NR$$ - noise reduction $$dB$$ $$dB$$ - -
$$n$$ - non-Newtonian viscosity $$\large{\frac{lbf-sec}{ft^2}}$$ $$Pa-s$$ $$kg-m^{-1}-s^{-1}$$ -
$$Q_i$$ - normal coordinates - - -  -
$$F_n$$ - normal force $$lbf$$ $$N$$ $$kg-m-s^{-2}$$  -
$$P_n$$ - normal load strength capacity for LRFD design - - -  -
$$V_n$$ - normal shear strength capacity for LRFD beam design - - -  -
$$\sigma$$ sigma normal stress $$\large{\frac{lbf}{in^2}}$$ $$Pa$$ $$kg-m^{-1}-s^{-2}$$  -
$$\sigma_{\theta}$$ sigma normal stress in any oblique plane $$\large{\frac{lbf}{in^2}}$$ $$Pa$$ $$kg-m^{-1}-s^{-2}$$  -
$$\Theta$$ Theta normalized water content dimensionless -
$$\mu N$$ mu nuclear magneton - $$\large{\frac{J}{T}}$$ $$J-T^{-1}$$  $$5.050\;783\;699(31)\;x\;10^{-27}$$ $$\large{\frac{J}{T}}$$
$$m_n$$ - nuclear mass - - -  -
$$I$$, $$\;J$$ - nuclear spin - - -  -
$$A$$ - nucleon number - - -  -
$$N$$, $$\;n$$, $$\;x$$ - number - - -  -
$$n$$ - number density dimensionless  -
$$n$$, $$n_a$$ - number of active coils dimensionless -
$$n$$ - number of air changes - - - -
$$N_c$$ - number of coils - - -  -
$$N_c$$ - number of cycles - - -  -
$$n$$ - number of data points in data set number - - - -
$$N$$ - number of data sets - - - -
$$N$$ - number of elements - - -  -
$$N$$ - number of molecules - - -  -
$$n$$ - number of moles dimensionless  -
$$N$$ - number of particles - - -  -
$$P$$ - number of phases - - -  -
$$N$$ - number of power strokes per minute - - -  -
$$N_t$$, $$\;n$$ - number of teeth - - -  -
$$n_t$$ - number of total coils - - - -
$$n$$ - number of trust joints, nails or bolts - - -  -
$$N$$ - number of turns or revolutions - - - -
$$Nu$$ - Nusselt number dimensionless  -
$$N$$ - Nyquist"s number - - -  -
Symbol Greek Symbol Definition English Metric   Value

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