Odpowiedzi

2010-03-16T19:22:20+01:00
Dane
T = 100⁰C
T₁ = 40 ⁰C
Cw = 4200 [J/kg × ⁰ C]
Q = 504000 J
Rozw.:
Q = m × Cw × ΔT
Q = m × Cw × ( T - T₁)
m = Q / Cw × ( T - T₁)
m = 504000J /4200 [J/kg × ⁰ C]×(100⁰C- 40 ⁰C) = 2 kg
1 5 1