Jawabanmu

2014-03-03T21:52:28+07:00
Q  = m . c . Δt
     = 10 . 450 . (100 - 20)
     = 4500 . 80 = 360000 J = 360 kJ
2014-03-03T22:40:10+07:00
Q=m.c.delta t =10kg*450j/kg C * 80 C =360.000J