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Q = 420.000 J
m = 20 kg
To = -5 C
c es = 2.100 J/KgC
Ditanyakan : Tt ?
Dijawab :
Tt-To = Q/(mxc)
Tt-(-5) = 420.000 / (20 x 2100)
Tt + 5 = 420.000/42.000 J
Tt+5 = 10
Tt = 10-5
Tt = 5 C