Odpowiedzi

2010-01-07T13:52:35+01:00
Dane:
T₁ = 0⁰C
T₂ = 120 ⁰ C
Cw = 2400 [J/kg×⁰C]
Q = 200 kJ = 200 000 J
Rozw.
Q = m×ΔT×Cw
Q = m×(T₂ - T₁)×Cw
m = Q / (T₂ - T₁)×Cw = 200000J / 120 ⁰C × 2400 [J/kg×⁰C] ≈ 0,7kg