Jawabanmu

Jawaban paling cerdas!
2014-05-12T16:57:30+07:00
Diket : Q = 84 kJ = 84000 J
          m = 500 g = 0,5 kg
          t1 = 20'C
          c = 4200 J/kgK atau J/kgC (sama saja)
Ditanya : t2....?
Q= m.c.Δt
84000 = 0,5.4200.(t2-t1)
84000 = 2100 (t2-20)
84000 = 2100t2 - 42000
84000 + 42000 = 2100t2
126000 = 2100 t2
t2 = 126000/2100
t2 = 60'C 
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