Jawabanmu

2014-02-28T20:01:57+07:00
Q=84000J
m=500 g=0,5kg
c=4200J/kg
T1=20
°

Q=m x c x (T2-T1)
8400 = 0,5 x 4200 x (t2 - 20)
T2 - 20 = 8400 / 2100
T2 - 20 = 4
T2 = 20 + 4 = 24 °C







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