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m₁ = 0,8 kg
t₁ = 10°C
m₂ = 1,5 kg
t₂ = 60°C
Dit = ta
Jwb =
Q₁ = Q₂
m₁.c.Δt = m₂.c.Δt
m₁.(ta-t₁) = m₂.(t₂-ta)
0,8.(ta-10) = 1,5(60-ta)
0,8 ta - 8 = 90 - 1,5 ta
2,3 ta = 98
ta = 42,6°C