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= 7,5 x 2,25 x 10 pgkt 6
= 16,875 x 10 pgkt 6 J
m = 7,5 kg
U = 2,25 . 10⁶
= 2,25 . 1000000
= 2250000 J/kg
Ditanyakan : Q
Penyelesaian : Q = m . U
= 7,5 . 2250000
= 16875000 J
= 16875 kJ