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2010-04-06T20:58:39+02:00
Dane: Szukane:
t3=?
Cw2=4190
Cw1= 130
m1= 1
m2= 10
t2=300
t1=30

m1*Cw1*(t2-t3)= m2*Cw2(t3-t1)
m1Cw1t2- m1Cw1t3 = m2Cw2t3- m2Cw2t1
m1Cw1t2 + m2Cw2t1= m2Cw2t3 + m1Cw1t3
m1Cw1t2+ m2Cw2t1= t3 (m2Cw2 + m1Cw1)
t3= (m1Cw1t2 + m2Cw2t1)/ (m2Cw2 + m1Cw1)

t3= (1* 130 *300 + 10* 4190 * 30)/( 10* 4190+ 1* 130)= (39000 + 1257000)/ (41900 + 130)= 129600/42030= 30,8=31