I3=Ubc/R3=18/3=6 A I2=I3-I1=6-3=3 A Uab=I3*R12=6*2=12 B Uac=Uab+Ubc=12+18=30 B R1=Uab/I1=12/3=4 Ом R2=Uab/I2=12/3=4 Ом =============== V=20*10^-3 м3 p=5*10^5 Па T=273+47=320 K m=0.17 кг === m=po*V po=m/V=0.17/(20*10^-3)=8.5 кг/м3 ================================
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I3=Ubc/R3=18/3=6 AI2=I3-I1=6-3=3 A
Uab=I3*R12=6*2=12 B
Uac=Uab+Ubc=12+18=30 B
R1=Uab/I1=12/3=4 Ом
R2=Uab/I2=12/3=4 Ом
===============
V=20*10^-3 м3
p=5*10^5 Па
T=273+47=320 K
m=0.17 кг
===
m=po*V
po=m/V=0.17/(20*10^-3)=8.5 кг/м3
================================