Jawabanmu

2014-06-12T08:29:51+07:00
Q = m. c. delta T
Q = 0,5 . 4200. 80
Q = 168000
2014-06-12T09:26:33+07:00
Q = mxcxΔT
Q= 500x4.200x80 = 168.000.000 J ( 168 MJ )