Formula Symbols - N
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Formula Symbols
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N
| Symbol | Greek Symbol | Definition | US | Metric | Value |
|---|---|---|---|---|---|
| \(ln\) | - | natural logarithm | - | - | - |
| \(T_n\) | - | Neel temperature | - | - | - |
| \(F_n\) | - | net force | \(lbf\) | \(N\) | - |
| \(NPSH\) | - | net positive suction head | - | - | - |
| \(NPSH_a\) | - | net positive suction head available | - | - | - |
| \(E_v\) | - | neutron energy | constant | constant | \(3.8280\;x\;10^{-19}\;kg\;m^2\;/\;s^2\) |
| \(m_n\) | - | neutron mass | constant | constant | \(1.674\;927\;498\;04\;x\;10^{-27}\;kg\) |
| \(NPSH_r\) | - | net positive suction head required | - | - | - |
| \(\tau_n\) | tau | net torque | \(lbf-ft\) | \(N-m\) | - |
| \(n.a.\) | - | neutral axis (axis connecting beam cross-section centroids) | - | - | - |
| \(T_n\) | - | neutral particle temperature | - | - | - |
| \(N\) | - | neutron number | - | - | - |
| \(N\) | - | normality | - | \(GEW\;/\;L\) | - |
| \(Q_i\) | - | normal coordinates | - | - | - |
| \(F_n\) | - | normal force | \(lbf\) | \(N\) | - |
| \(P_n\) | - | normal load strength capacity for LRFD design | \(lb \;or\; kip\) | \(N \;or\; kN\) | - |
| \(V_n\) | - | normal shear strength capacity for LRFD beam design | \(lb \;or\; kip\) | \(N \;or\; kN\) | - |
| \(\sigma\) | sigma | normal stress | \(lbf\;/\;in^2\) | \(Pa\) | - |
| \(\sigma_{\theta} \) | sigma | normal stress in any oblique plane | \(lbf\;/\;in^2\) | \(Pa\) | - |
| \(\mu_n\) | mu | nuclear magneton | constant | constant | \(5.050\;783\;7461\;x\;10^{-27}\;J\;T^{-1}\) |
| \(m_n\) | - | nuclear mass | - | - | - |
| \(I\), \(\;J\) | - | nuclear spin | - | - | - |
| \(A\) | - | nucleon number | - | - | - |
| \(N\), \(\;n\), \(\;x\) | - | number | - | - | - |
| \(n\) | - | number density | \(ft^3\) | \(m^3\) | - |
| \(n\), \(n_a\) | - | number of active coils | - | - | - |
| \(n\) | - | 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 | - | - | - |
| \(N\) | - | number of particles | - | - | - |
| \(P\) | - | number of phases | - | - | - |
| \(N\) | - | number of power strokes per minute | \(min^{-1}\) | - | - |
| \(N_t\), \(\;n\) | - | 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 | Dimensionless | - |
| \(G\) | - | Newtonian constant of gravitation | constant | constant | \(6.674\;30\;x\;10^{-11}\;m^3 kg^{-1} s^{-2}\) |
| \(N\) | - | Nyquist"s number | - | - | - |
| Symbol | Greek Symbol | Definition | US | Metric | Value |
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