Oblicz pole powierzchni dna akwarium, jesli cisnienie wywierane na dno przu sile parcia 20 N wynosi 50 Pa
p=F/s /*s
ps=F/ :p
s=F/p
s=20/50
s=0,4(m^2)
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p=F/s /*s
ps=F/ :p
s=F/p
s=20/50
s=0,4(m^2)