Jawabanmu

2014-05-09T13:21:34+07:00
Tt=To+deltaT
=To+Q/(mxc)
=20+(84x1.000)/(500/1.000)x4.200
=20+84.000/0,5x4.200
=20+84.000/2.100
=20+40
=60°C
2014-05-09T13:35:20+07:00
Δt=Q:m.c
T2-T1=84000:500.4200
T2-20=0,04
T2=0,04+20
T2=20,04