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m = 2 kg
t1 = 30'c
Q = 39000 J
c = 390 J/kg'c
Ditanya: t2....?
jawab:
Q = m . c . (t2 - t1)
39000 = 2 . 390 . (t2 - 30)
39000 = 780 (t2 - 30
t2 - 30 = 39000/780
t2 - 30 = 50
t2 = 50 + 30
t2 = 80'c
suhu akhir tembaga 80'c
semoga membantu :)
semangat belajarnya :)
jadikan terbaik ya :)