Odpowiedzi

2010-02-27T12:53:45+01:00
T₁ = 20⁰C
T₂ = 40 ⁰C
m = 0,5 kg
Cw ≈ 4200 [J/kg ×⁰C]
Rozw.:
Q = m × Cw × ΔT
ΔT= T₂ -T₁ = 40 ⁰C - 20⁰C = 20⁰C
Q = m × Cw × ( T₂ -T₁) = 0,5 kg × 4200 [J/kg ×⁰C] × 20⁰C =42000 J
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