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Dane: Szukane:
g=10m/s2 p=?
ro=1000kg/cm3=100000kg/m3
h=250mm=0,25m
p=ro*g*h
p=100000*10*0,25
p=250000Pa
p=2,5*106hPa
zad. 2
ro=2,1g/cm3=100000kg/m3 m=?
V=3dm3=30m3 fc=?
ro=m/v Fc=m*g
ro*v=m Fc=3000000*10
m=30*100000 Fc=30000000N
m=3000000kg