Fysikk 05.11.2016
Lagt inn: 05/11-2016 14:35
Ser lett ut, men klarte den ikke lol 
b)zerooo130 skrev:Ser lett ut, men klarte den ikke lol
antar irreversibel-og isotermprosess, DVs
[tex]\Delta U = \Delta H=0[/tex]
[tex]w_1 = -p_{ex} \Delta V[/tex]
V1 finnes vha PV = nRT
[tex]V_1 = 24,06\,L[/tex]
[tex]V_2 = 12,03\,L[/tex]
så
[tex]w_1=1,219\,kJ[/tex]
\\\\\\\\\\\\\\\\\\\\\
adiabatisk[tex], q=0[/tex]
[tex]w=\Delta U=1,5*n*R*\Delta T[/tex]
[tex]T_2=222,4\,K[/tex]
[tex]\Delta U = w_2=0,88\,kJ[/tex]
\\\\\\\\\\\\\\\\\\\\\\
isobaric, [tex]\Delta p =0[/tex]
[tex]V_3=12,03\,[/tex]L
[tex]V_4=24,06\,[/tex]L
så
[tex]w_3=w_{irrev}=-p_{ex}*\Delta V= -1,219\, kJ[/tex]
\\\\\\\\\\\
så
[tex]w_{tot}=w_2 = 088\,kJ[/tex]