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m = 2 kg
To = 20 C
Q = 180 KJ = 180.000
c = 900J/KgC
Ditanyakn : T akhir ?
Dijwab :
Q = m x c x ΔT
180.000 = 2 x 900 x ΔT
180.000 = 1.800 x ΔT
ΔT = 180.000/1800
(T-20) = 100
T = 100 + 20
T = 120 (D)