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es la generalización del principio
de conservación de Energía
si a un sistema se le suministra calor, este
calor se utiliza para cambiar la energía
interna del sistema y para realizar trabajo
formula
La primera ley de la termodinámica
relaciona el trabajo y el calor transferido
intercambiado en un sistema a través de
una nueva variable termodinámica
ejercicio 22
W=P(V_F-V_I)
el trabajo a presion
constante es(isobarica)
la energía interna ni se crea ni se
destruye, sólo se transforma
En termodinámica la energía interna de un
sistema ( U ) es una variable de estado
La energía interna de un gas ideal depende
únicamente de la temperatura que tenga el gas
Se denomina trabajo termodinámico a la transferencia de
energía entre el sistema y el entorno por métodos que no
dependen de la diferencia de temperaturas entre ambos