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t.es =
c.es = 0,5 kal/
L.es = 80 kal/gr
m.air = 20 gr
c.air = 1 kal/
ditanya : Q
azas black : Q.dilepas = Q.diterima
m.air x c.air x (100 - tc) = m.es x c.es x (tc - -15) + m.es x L.es
20 x 1 x(100 - tc) = 10 x 0,5 x(tc + 15) + 10 x 80
2000 - 20.tc = 5.tc + 75 + 800
- 20.tc - 5.tc = 875 - 2000
- 25.tc = - 1125
tc =
tc =
T1:-15
m2:20 gram
T2 :100
dit:ta....?
peny:
m1.c1.(ta-t1)=m2.c2.(t2-ta)
10.0.(ta- -15)=20.0.(100-ta)
10.(ta- -15) =20.(100 ta)
10.(ta-150) =20.(2000ta)
10 ta +2000 =150 +20 ta
2010 ta =170 ta/2010
ta =0,56