Specific Internal Energy

Specific internal energy, abbreviated as u, is the internal energy per unit mass of a substance.

  

Specific Internal Energy formula
\(\large{ u = \frac{ U }{ m }  }\)
Symbol	English	Metric
\(\large{ u }\) = specific internal energy	\(\large{ Btu }\)	\(\large{ J }\)
\(\large{ U }\) = internal energy	\(\large{Btu}\)	\(\large{J}\)
\(\large{ u }\) = \(\large{ m }\) = total mass of a system	\(\large{lbm}\)	\(\large{kg}\)