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m = 500 g = 0,5 kg
t1 = 20 C
c = 4200
Dit : t2 = ...
Jawab :
Q = m . c . (t2 - t1)
8400 = 0,5 x 4200 x (t2 - 20)
t2 - 20 = 8400 : 2100
t2 - 20 = 4
t2 = 20 + 4 = 24 C