Jawabanmu

2013-12-22T12:02:35+07:00
Kekekalan energi M c (delta)T = kekal
2 . 4200 (100-T) = 18 . 4200 (T-25)
100 - T = 9T - 225
10T = 325
T = 32,5 derajat celcius
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2013-12-22T12:55:54+07:00
Mct1=mct2 2x1x(100-t)=18x1x(t-25)    t=32,5 celcius.
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