Question

Mă puteți ajuta cu problemele 41 si 42???

Answer 1

41.Se da:
S1=4cm²=0,0004m²
S2=160cm=0,016m²
F1=150N
F2=?N

Formule:
p1=p2
F1/S1=F2/S2
F2=F1*S2/S1

Calcule:
F2=150*0,016/0,0004=6000N


42.Se da:
L=10m
l=5m
p=750mmHg≈100000Pa
F=?N

Formule:
p=F/S
F=p*S

S=L*l

F=p*L*l

Calcule:
F=100000*10*5=5000000N