Respostas

2013-07-28T22:13:38-03:00
Capacidade termica C=c*m

C=c*m

C/m=c
600/200=c
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c=3cal/g°C
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Q=C*/\t
Q=600*20
Q=12.000 cal

Q=m*c*/\t
12.000=200*3*(tf-20)

12.000= 600tf - 12.000

24.000 = 600tf

24.000/600 = tf

240/6 = tf

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tf = 40°C
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