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Physics 7 Online
OpenStudy (anonymous):

Burbis

OpenStudy (ivancsc1996):

Ahora si.

OpenStudy (anonymous):

jojo

OpenStudy (ivancsc1996):

El problema le dice esto en matemáticas:\[\frac{ e _{r} }{ e _{i} }=0.6\]Ahora la eficiencia ideal es la eficiencia entre temperaturas, mientras que la real es entre el trabajo y el calor de entrada.\[e _{r}=\frac{ W }{ Q_{ entrada } }\]\[e _{t}=\frac{ T _{alta}-T _{baja} }{ T _{alta} }\]Ahora tenemos un sistema de tres ecuaciones donde cuando resolvemos para W nos va a dar. \[W=\frac{ e _{r} }{ e _{t} }\frac{ T _{alta}-T _{baja} }{ T _{alta} }Q _{entrada}=354.78J\]

OpenStudy (ivancsc1996):

En numeros es: \[W=0.6 \frac{ 460K-290K }{ 460K }1600J=354.78J\]

OpenStudy (ivancsc1996):

El 23 es: \[e=\frac{ W }{ Q _{entra} }=\frac{ T_{alta}T_{baja} }{ T_{alta} }\]Y si sabemos que \[P=\frac{ W }{ t } \rightarrow W=Pt\]Entonces resolvemos para Tbaja\[T _{baja}=T _{alta}(1-\frac{ Pt }{ Q _{entra} })=439.67°C\]

OpenStudy (anonymous):

thanks burbis

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