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@zheniaserova
October 2021
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solvo
13.
ΔU=3vRΔT/2, ΔT=2*ΔU/(3vR)=2*5000/(3*2*8,31) = 200 К.
a)
14.
A=pΔV=2*10^5*3=6*10^5 Дж.
б)
15.
Q=cmΔt=380*0,5*400= 76000 Дж.
в)
16.
ΔU=Q-A, A=Q-ΔU=700-800=-100 Дж.
а)
17.
η=(T1-T2)/T1=1-T2/T1, T2/T1=1-η, T1=T2/(1-η) = 320/0,8= 400 K.
в)
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Answers & Comments
ΔU=3vRΔT/2, ΔT=2*ΔU/(3vR)=2*5000/(3*2*8,31) = 200 К.
a)
14.
A=pΔV=2*10^5*3=6*10^5 Дж.
б)
15.
Q=cmΔt=380*0,5*400= 76000 Дж.
в)
16.
ΔU=Q-A, A=Q-ΔU=700-800=-100 Дж.
а)
17.
η=(T1-T2)/T1=1-T2/T1, T2/T1=1-η, T1=T2/(1-η) = 320/0,8= 400 K.
в)