Jawabanmu

2014-04-11T18:23:49+07:00
2014-04-11T18:24:26+07:00
Q1 = c x m x ΔT
    = 2100 x 4 x 10
    =84000 J
Q2= m x L   
     = 4 x 336.000
     = 1344000 J
Q. total = 84000 + 1344000
            = 1428000 J