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Tc = 20.5 + 5.20 / 20+5
Tc = 200/25
Tc= 8°c
m1=20 liter
m2=5 liter
C air=4200 j/kg°C
t1=5°C
t2=20°C
dit? t campuran
dijawab=
Q1=Q2
M1.C.(tc-t1)=M2.C.(t2-tc)
20.4200.(tc-5)=5.4200(20-tc)
84000.(tc-5)=21000(20-tc)
84000tc-420000=420000-2100tc
84000tc+2100tc=840000
85100tc=840000
tc=9.9°C