Question

A) –38,0 J B) –10,0 J C) –6,0 J D) 6,0 J E) 8,0 J

Answer 1

resposta - D) 6,0 J

resolução :

T = ?

T = (área)

atenção : 1l = 1dm³ = 10^-3m³

T = (6,0 . 10³ + 2,0 . 10³) . 4,0 . 10³ / 2

T = 16J

Q = T + ΔU

22 = 16 + ΔU

ΔU = 6,0 J