Formula Symbols - U

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

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Formula Symbols

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U

SymbolGreek SymbolDefinitionEnglishMetricSIValue
\(UTS\) - ultimate tensile stress \(\large{ \frac{lbf}{in^2} }\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(l_{ur}\) - unrestrained pipe length \(ft\) or \(in\) \(m\) or \(mm\) \(m\) or \(mm\)  -
\(K_1\) - upstream resistance coefficient dimensionless -
\(L_b\) - unbraced length of a steal beam in LRFD design \(ft\) or \(in\) \(m\) or \(mm\)  \(m\) or \(mm\) -
\(p_u\) - underwater pressure \(\large{ \frac{lbf}{in^2} }\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(\gamma\) gamma unit weight \(\large{ \frac{lbm}{ft^3} }\) \(\large{ \frac{N}{m^3} }\) \(N-m^{-3}\) -
\(\gamma_s\) gamma unit weight of solid \(\large{ \frac{lbm}{ft^3} }\) \(\large{ \frac{N}{m^3} }\) \(N-m^{-3}\) -
\(\gamma_w\) gamma unit weight of water \(\large{ \frac{lbm}{ft^3} }\) \(\large{ \frac{N}{m^3} }\) \(N-m^{-3}\) -
\(R\), \(\;R*\) - universal gas constant \(\large{ \frac{lbf-ft}{lbmol-R} }\) \(\large{ \frac{J}{kmol-K} }\) \(J-kmol-K^{-1}\)   \(8.314\;462\;618\;153\;24\) \(\large{ \frac{J}{kmol-K} }\)    
\(G\) - universal gravitational constant \(\large{\frac{lbf-ft^2}{lbm^2}}\)  \(\large{\frac{N - m^2}{kg^2}}\) \(N - m^2-kg^{-2}\)  \(6.674\;30\;x\;10^{-11}\) \(\large{\frac{N - m^2}{kg^2}}\) 
\(USLE\) - universal soil loss \(tons-acre-yr\) \(tonnes-hectare-yr\) \(tonnes-hectare-yr\) -
\(l_{ur}\) - unrestrained pipe expansion \(ft\) \(m\) \(m\)  -
\(U\) - Ursell number dimensionless -
Symbol Greek Symbol Definition English Metric   Value

 

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