Jawabanmu

2014-04-28T19:01:07+07:00
Q lepas = Q serap
m1 . C1 . Δ T1 = m2 . C2 .
Δ T2
1kg . 4184 J/kg C . (90 - tc) = 2kg . 4184 . (Tc-60)
90 . 1tc = 120 . 2tc
2tc + 1tc = 120 + 90
3tc = 210
tc = 70°


Jawaban paling cerdas!
2014-04-28T19:20:59+07:00
Qlepas=Qterima m1x(T1-T)=m2x(T-T2) 1x(90-T)=2x(T-60) 90-T=2T-120 90+120=2T+T 210=3T 70=T