ASAS BLACK
T₁ = 20°C
T₂ = -5°C
m₁ = 20 kg
m₂ = 400 g = 0,4 kg
cₑₛ = 2100 J/kg°C
cₐᵢᵣ = 4200 J/kg°C
Lₑₛ = 336000 J/kg
Tc = ... ?
Q.lepas = Q.terima
m₁ cₐᵢᵣ (T₁ - Tc) = m₂ cₑₛ (0 - T₂) + m₂ Lₑₛ + m₂ cₐᵢᵣ (Tc - 0)
20 · 4200 · (90 - Tc) = 0,4 · 2100 · (0 - (-5)) + 0,4 · 336000 + 0,4 · 4200 · Tc
Tc = 86,62°C ✔
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ASAS BLACK
T₁ = 20°C
T₂ = -5°C
m₁ = 20 kg
m₂ = 400 g = 0,4 kg
cₑₛ = 2100 J/kg°C
cₐᵢᵣ = 4200 J/kg°C
Lₑₛ = 336000 J/kg
Tc = ... ?
Q.lepas = Q.terima
m₁ cₐᵢᵣ (T₁ - Tc) = m₂ cₑₛ (0 - T₂) + m₂ Lₑₛ + m₂ cₐᵢᵣ (Tc - 0)
20 · 4200 · (90 - Tc) = 0,4 · 2100 · (0 - (-5)) + 0,4 · 336000 + 0,4 · 4200 · Tc
Tc = 86,62°C ✔