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Fn= 0.5kg * 10 m/s²=5N
p= Fn/Pp
Pp=50cm³
p=5N/50cm³=0.1Pa
2)m=0.7 kg=70dag=700g
chyba szukasz objętości
S=8,7g/cm³
v=m/S
v=700g/8,7g/cm³=80.4cm³
3)m=S*v
S=810kg/m³
v=350 dm³= 0.35 m³
m=810kg/m³*0.35 m³= 283.5m³
F=m*g=0,5kg*10m/s2=5N
50cm2=0,005m2
p=F/s=5N/0,005m2=1000Pa
2) chyba objętość
V=m/gęstość=700g/8,7=80,5cm3
3)
m=gęstość*v=810kg/m3*0,35m3=283,5kg