Jawabanmu

2014-03-25T23:52:34+07:00
Δt = t2-t1 = 120-30 = 90

Q = m.c.Δt
Q = 0,35.4200.90
Q = 132300 J
1 5 1
2014-03-26T00:12:52+07:00
Q= mCΔt
Q= 0,35Kgx4200J/Kg'C(120-30)'C
Q=0,35x4200Jx90
Q=132.300J
1 3 1