October 2018 1 159 Report
Air massanya 2kg dipanaskan dengan api tetapi suhunya naik menjadi 90°C. Jika kalor jenis air 4200 J/kg°C dan besar kalor 336.000 J, maka suhu awal air itu adalah...
a. 35°C
b. 40°C
c. 50°C
d. 80°C
Tolong bantuannya ya...

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