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T.awal = 20
m = 1,5 kg
c = 4200 j/kg
Q = m.c. (T.akhir - T.awal)
378000 = 1,5 . 4200 . (T.akhir - 20)
378000 /6300 = T.akhir -20
60 +20 = T.akhir
80 = T. akhir
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