Dane:
m₁ = 150 kg
T₁ = 20⁰C
T = 35⁰C
T₂ = 100 ⁰C
m₂ = ?
Rozw.:
Q₁ = m₁ × Cw × ΔT
ΔT= T -T₁
Q₁ = m₁ × Cw × ( T -T₁)
Q₂ = m₂ × Cw × ΔT
ΔT= T₂ -T
Q₂ = m₂ × Cw × ( T₂ -T )
Q₁ = Q₂
m₁ × Cw × ( T -T₁) = m₂ × Cw × ( T₂ -T )
m₁ × ( T -T₁) = m₂ × ( T₂ -T )
m₂ = m₁ × ( T -T₁) / ( T₂ -T )
m₂ = 150 kg × (35 ⁰C - 20⁰C) / (100 ⁰C - 35 ⁰C) = 34,6 kg
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Dane:
m₁ = 150 kg
T₁ = 20⁰C
T = 35⁰C
T₂ = 100 ⁰C
m₂ = ?
Rozw.:
Q₁ = m₁ × Cw × ΔT
ΔT= T -T₁
Q₁ = m₁ × Cw × ( T -T₁)
Q₂ = m₂ × Cw × ΔT
ΔT= T₂ -T
Q₂ = m₂ × Cw × ( T₂ -T )
Q₁ = Q₂
m₁ × Cw × ( T -T₁) = m₂ × Cw × ( T₂ -T )
m₁ × ( T -T₁) = m₂ × ( T₂ -T )
m₂ = m₁ × ( T -T₁) / ( T₂ -T )
m₂ = 150 kg × (35 ⁰C - 20⁰C) / (100 ⁰C - 35 ⁰C) = 34,6 kg