Respostas

2014-03-29T11:12:17-03:00
Respota

m = 1kg = 1000g
c = 0,6
Q = 12000
To = -30

Q = m.c.(T - To)

12000 = 1000.0,6.(T - (-30)

12000 = 600.(T + 30)

12000 = 600T + 18000

600T = 12000 - 18000

600T = -6000

T = -6000 /600

T = -10ºC
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