Jawabanmu

2013-12-05T15:20:35+07:00
Kalo nggak salah gini

Q = m . c. delta t
    = 7 . 4.200 . (46-40)
    =113.600 J
2013-12-05T18:35:17+07:00
Dik
m = 7 kg
Delta T = 46 -40 = 6
Q = M . c . Delta T
7 . 4200 . 6 = ??? selamat mencoba