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m1 : 1kg
T1 : 90℃
m2 : 2kg
T2 : 60℃
jawab
Q lepas = Q serap
m1. c . delta T1 = m2 . c. delta T2
1 (90-Tc) = 2 (Tc-60)
90 - Tc = 2Tc - 120
90 + 120 = 2Tc + Tc
210 = 3Tc
70 = Tc