October 2018 1 39 Report
Besar kalor yang diperlukan untuk meleburkan 20 kg timbal ( L = 2,5 × 10 pangkat 4 J/kg ) adalah ?

a. 5 × 10 pangkat 3 Joule
b. 5 × 10 pangkat 4 Joule
c. 5 × 10 pangkat 5 Joule
d. 5 × 10pangkat 6 Joule
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