( ( ( Internal ( Energy One ) ) ( of ( ( the ( thermodynamic properties ) ) ( of ( a system ) ) ) ) ) ( ( is ( ( ( ( ( its ( internal energy ) ) , ) E ) , ) ( which ( is ( ( ( the sum ) ( of ( the ( kinetic ( and ( potential energies ) ) ) ) ) ) ( of ( ( the particles ) ( that ( form ( the system ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Internal) (NNP Energy) (NNP One)) (PP (IN of) (NP (NP (DT the) (JJ thermodynamic) (NNS properties)) (PP (IN of) (NP (DT a) (NN system)))))) (VP (VBZ is) (NP (NP (PRP$ its) (JJ internal) (NN energy)) (, ,) (NP (NN E)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (NP (DT the) (NN sum)) (PP (IN of) (NP (DT the) (JJ kinetic) (CC and) (JJ potential) (NNS energies))) (PP (IN of) (NP (NP (DT the) (NNS particles)) (SBAR (WHNP (WDT that)) (S (VP (VBP form) (NP (DT the) (NN system))))))))))))) (. .)))
Internal Energy One of the thermodynamic properties of a system is its internal energy , E , which is the sum of the kinetic and potential energies of the particles that form the system.
(ROOT (S (NP (NP (DT The) (NN sum)) (PP (IN of) (NP (NP (DT the) (JJ kinetic) (CC and) (JJ potential) (NNS energies)) (PP (IN of) (NP (NP (DT a) (NN system) (POS 's)) (NNS atoms) (CC and) (NNS molecules)))))) (VP (VBZ is) (VP (VBN called) (NP (JJ internal) (NN energy)))) (. .)))