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ρ = 2700 kg/m³ = 2,7 g/cm³
a = 2 cm
Szukane :
m = ?
Rozwiązanie :
ρ = m / V
m = ρ * V
V = a³
V = 2 ³ = 8 cm³
m = 2,7 * 8 = 21,6 g
ρ = 2 700 kg/m³
V szęścianu = a³ = 0,02³ = 0,000008 m³
masa = gęstość * objętość = 2 700 kg/m³ * 0,000008 m³ = 0,0216 kg = 21, 6 grama
1 kg = 1 000 gram