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t1 = 40°C
t2 = 60°C
Q = 60.000 J
C?
jawab:
Q = m . c . Δt
Q = C . Δt
C = Q / Δt
C = Q / (t2 - t1)
C = 60.000 / (60 - 40)
C = 60.000 / 20
C = 3000 J/°C
nomor 2
m1 = 500 g
t1 = 60°C
m2 = 250 g
t2 = 90°C
tc?
jawab:
m2 . (t2 - tc) = m1 . (tc - t1)
250 . (90 - tc) = 500 . (tc - 60)
22.500 - 250tc = 500tc - 30.000
22.500 + 30.000 = 500tc + 250tc
52.500 = 750tc
tc = 52.500 / 750
tc = 70°C
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