Bantuin buat nomor 4

Dik:
m = 500 g = 0,5 kg
Tl (suhu logam) = 80°C
Tc = 30°C
Qterima = 9750 J

Dit:
kalor jenis logam (c)

Jawab:

Qlepas = Qterima

m × c × ∆T = Qterima

m × c × (Tl - Tc) = Qterima

0,5 × c × (80 - 30) = 9750

0,5c × 50 = 9750

25c = 9750

c = 9750 / 25

c = 390 J/kg°C

Jadi kalor jenis logam P adalah 390 J/kg°C (A)
Semoga membantu ^_^