August 2018 1 90 Report
Untuk meleburkan sepotong timbal pada titik leburnya di perlukan kalor 5x10 pangkat 4 J.Apabila kalor lebur timbal 25.000 J/kg.massa timbal yg melebur sebanyak...kg
a.0,2
b.0,5
c.2
d.5
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