Odpowiedzi

2009-11-10T19:40:22+01:00
Ρ = m:v

v = m:ρ
m = 1,2 kg
ρ = 790 kg/m3
v = 1,2kg : 790 kg/m3 = 3/1975 m3
7 3 7
2009-11-10T19:42:24+01:00
790kg/m³ = 0,79g/cm³
1,2kg = 1200g
v = m / d
v = 1200 / 0,79 ≈ 1519cm³
2 1 2
2009-11-10T19:43:05+01:00
Dane:
m = 1,2 kg
d = 790 kg/m³

Szukane:
V = ?

Wzór:
d = m/v

Rozwiązanie:
d = m/V
V = m/d

V = 1,2/790 = 0,0015 m³ = ~1,5dm³
5 3 5