Question

Am nevoie de ajutor la exercițiul 1 dau coroana

Answer 1

Presiunea e F/S, deci F=p*S.

S=1.5*√3 m^2, adica 0.026 m^2.

p=20torr=2666 Pa.

F=69.33N.

Answer 2

1 torr = 1 mm coloana de mercur

1 mm coloana de mercur =133,32 Pa

p=20 torri=2666,44 Pa

S=1,5√3 dm²=2,59 dm²=0,0259 m²

p=F/S=>F=pS=2666,44*0,0259=69,19 N