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m = 500 g = 0,5 kg
= 4.200 J/kg
T₁ = 20°C
- Ditanya : T₂
- Jawab :
Q = m × c × ΔT
Q = m × c × ( T₂ - T₁ )
84.000 = 0,5 × 4.200 × ( T₂ - 20 )
T₂ - 20 = 84.000 : 2.100
T₂ = 40 + 20
T₂ = 60°C
Q = 84 KJ = 84000 Joule
m = 500 gram = 0,5 Kg
t1 = 20°C
c = 4.200 J/(Kg.K)
Ditanyakan : .... ?
Penyelesaian :
t = Q / m . c
( - ) = 8400 / 0,5 . 4200
( - 20) = 40
= 40 + 20
= 60°C