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V=m/d
V=3500g/0,7g/cm3
V=5000cm3
2
V=a³
V=(0,1m)³
V=0,001m³
d=m/V
d=0,6kg/0,001m³
d=600kg/m³
Dane:
m = 3,5 kg = 3500 g
ρ = 0,7g/cm³
Rozw.:
ρ = m/V
V = m/ρ = 3500 g/ 0,7g/cm³ = 5000 cm³
Zad 2:
Dane
a = 10 cm
m = 0,6 kg
Rozw.:
V = a³ = (10 cm )³ = 1000 cm³
ρ = m/V = 600g/1000 cm³ = 0,6 g/cm³
ϱ (ro) = 0,7g/cm³
m = 3,5 kg = 3500 g
V = m:ϱ
V = 3500 g : 0,7g/cm³ = 5000 cm³
2)
m = 0,6 kg = 600 g
a = 10 cm
V = a³
V = 1000 cm³
ϱ = m:V
ϱ = 600g : 1000 cm³
ϱ = 0,6 g/cm³