October 2018 1 45 Report
Batang timah dengan kalor jenis 1400 J/kg°c berusuhu 80°c dicelupkan kedalam 10 kg air dengan kalor jenis 4200j/kg°c bersuhu 14°c. setelah terjadi kesetimbangan termal, suhunakhir campuran 20°c. massa batang timah tersebut adalah....
a. 3kg
b. 4kg
c. 5kg
d.6kg
e. 7kg
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