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F=? S=5cm2 P=290KPa​

Răspuns :

presiunea p = forta F / sectiunea S

p=290kPa=290000N/m^2

S=5cm^2=5×10^(-6)m^2

F=p×S=290×10^3×5×10^(-6)=290×5×10^(-3)=1450×10^(-3)=1.45N

Raspuns: F=1.45N

p=f/s
290 kPa=290000 Pa
5 cm^2=0,0005 m^2
290000=f/0,0005
f=290000x0,0005=145 N