February 2019 1 21 Report
Air dinaikkan suhunya dari 30°C sampai 70°C yang kalor jenisnya 4200 J/kg°C memerlukan kalor 840 kJ. Maka massa air itu adalah...
A. 50 kg
B. 5 kg
C.0,5 kg
D. 0,05 kg
TULIS CARANYA..
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