P*V*g=k*x1(1)
p*V*g-pж*V*g=k*x2(2)
Берем отношение 1 к 2
p/p-pж=x1/x2=1,6/1
<span>p=1,6*pж/1,6-1=1,6*1000/1,6-1=2667 кг/м3</span>
R=R1+R2 ⇒ R2=R-R1=15-3=12 Ом
I2=I1=I=U2/R2=24/12=2 A
U1=I*R1=2*3=6 B
U=U1+U2=6+24=30 B
| v | = L/t = (V/s) / t = (18м3/0.01 м2) / 1час =(18/0.010 /3600 = 0.5 М/С