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___________/(m1+m2)
m1+m2
(m1+m2)*T=m1*T1+m2*T2/T1+m2*T2
m1T-m1T1=m1T2+m2*T2
m1(T-T1)=m2T2-m2T
m1(T-T1)=m2*T2-m2T/(T-T1)
m2*T2-m2*T
m1=---------------------
T-T1
Dane:
m2=1kg
m2=1kg
T2=20stopni C
T=60stopni C
Szukane:
m1=?
1kg*20^C-1kg*60^C 20kg*^C-60kg-^C
m1=---------------------------------= ---------------------------=====
60^C-90^C -30^C
-40kg*^C 1
=====------------===1-----kg
-30^C 3
1
odp.Dodano 1----kg wody gorącej.
3