Odpowiedzi

2009-12-06T17:40:13+01:00
2009-12-06T17:41:08+01:00
M= d x v 3dm3= 3000cm3
m= 3000 x 7.2 [ cm3: g/cm3]
m= 21600 [g]
2009-12-06T17:42:01+01:00
V=3dm3=3000cm3
d=7,2g/cm3

d=m/V => m=dV

m=3000cm3*7,2g/cm3=21600g=21,6kg