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S = 1g/cm3 = 0,001kg/m3
g = 10 N/kg
V = ?
Fw = g*S*V | : S*g
V = Fw/S*g
V= 4/0,001*10
V= 4/0,01
V = 400 m3
V = [N/N/kg*kg/m3] = [N/N*m3] = [m3]
p=1g/cm3
g=10m/s2
V=?
Fw=p*g*V
Z przekształcenia mamy:
V=Fw/(pg)
V= 4n/(1kg/dm3*10m/s2)=4/10 dm3=0,4dm3
Gęstość 1g/cm3 jest równa 1kg/dm3 po zamianie odpowiednich jednostek