h = 30см = 0,3м
p = 2100Па
g = 10H/кг
ρ - ?
p = ρgh => ρ = p/gh
ρ = 2100/(0,3*10) = 700кг/м³(це сухий дуб)
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h = 30см = 0,3м
p = 2100Па
g = 10H/кг
ρ - ?
p = ρgh => ρ = p/gh
ρ = 2100/(0,3*10) = 700кг/м³(це сухий дуб)