Jawabanmu

2014-03-26T15:15:37+07:00
2400 = m . 4200 . 40
m     = 2400 / 168000
        = 0,01428571 kg
Jawaban paling cerdas!
2014-03-26T15:17:45+07:00
Dik :
delta T = 60 - 20 = 40 derajat C
Q = 2400 J/Kg
c = 4200 J/Kg derajat C

dit : m ?

jawab :
m = Q / c . delta T
    = 2400 / 4200 . 40
    = 0,01428571 Kg
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