Jawabanmu

2014-05-03T18:35:31+07:00
M = 1 kg  czat = 300 J/kgK
ΔT = 30-20 = 10
Q = m.c.ΔT
Q = 1 x 300 x 10
Q = 3000 Joule
2014-05-03T20:53:03+07:00