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2250 = 0,5 . 900 . (T2 - 25)
2250 = 450 (T2 - 25)
2250/450 = T2 - 25
5 = T2 - 25
T2 = 25 + 5
T2 = 30 derajat C
Q = m × c × (t₂ - t₁)
2.250 = 0,5 × 900 × (t₂ - 25)
2.250 = 450 × (t₂ - 25)
2250/450 = (t₂ - 25)
5 = t₂ - 25
5 + 25 = t₂
30 = t₂
t₂ = 30°C
jadi, suhu benda itu adalah 30°C
ket:
Q = kalor (J)
m = massa (kg)
c = kalor jenis (joule/kg°C)
Δt = perubahan suhu
t₂ = suhu aksir benda
t₁ = suhu awal
sekian dan terima kasih.....=)