Медь p=8500 kg/m^3
Объяснение:
F1=8.5H
F2=7.5H
mg=8.5 => m=0.85 kg
mg-Fa=7.5
Fa=pVg
Fa=mg=7.5=1H
pVg=1
pV=0.1
1000V=0.1
V=0.0001 m^3
V=m/p
p=m/V
p=0.85/0.0001= 8500 kg/m^3
Медь p=8500 kg/m^3
Объяснение:
F1=8.5H
F2=7.5H
mg=8.5 => m=0.85 kg
mg-Fa=7.5
Fa=pVg
Fa=mg=7.5=1H
pVg=1
pV=0.1
1000V=0.1
V=0.0001 m^3
V=m/p
p=m/V
p=0.85/0.0001= 8500 kg/m^3