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2014-06-23T19:55:27-03:00
Q1+Q2=0
m.c.ΔT+ m2.c2.Δt2=
200.1.(x-20)+500.0,12.(x-140)=
200x -4000 + 60(x-140)=
200x-4000+60x -8400=
260x=8400+4000=
260x=12400
x=12400/260
x= 47,69

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