2)
Сob=(C2+C3)*C1/(C1+C2+C3)=C*5/6
g=g1=Cob*U=*24C*5/6=20C
U1=g1/C1=20C/C=20V
U2=U3=U-U1=24-20=4V
g2=U2*C2=4*2C=8C
g3=U3*C3=4*3C=12C
3)
начнем справа на лево
с78=С7*С8/(С7+С8)=С*С*3/4С=С/4
с678=с78+С6=С/4+С/2=С*3/4
с5678=с678*С5/(с678+С5)=С*6/11
с4567=с5678+С4=(С*6/11)+С=С*17/11
с3456=с4567*С3/(с4567+С3)=С*17/62
с23456=с3456+С2=(С*17/62)+С/2=С*48/62=С*24/31
Cob=с23456*C1/(с23456+C1)=С*24/31*C/(С*24/31+C1)=C*24/55