Do 1 kg wody o temperaturze 30stopni celsjusza wrzucono 0,5 kg żelaza o temperaturze 120 stopni celsjusza . Oblicz temperature wody. prosze o bardzo szybką odp
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m1= 1 kg
c1 = 4200 J/kg *C
t1 = 30 C
m2= 0,5 kg
c2= 460 J/kg*C
t2= 120 C
t3=?
Q= m*c*Δt
m1*c1*(t3-t1)= m2*c2*(t2-t3)
m1*c1 / m2*c2 = (t2-t3) / (t3-t1)
1kg*4200 J/kg*C / 0,5 kg * 460 J/kg*C = (120-t3) /(t3-30)
4200/230 = (120-t3) /(t3-30)
18,3(t3-30) = 120 - t3
18,3t3 - 549 = 120 - t3
17,3 t3= 669
t3= 38,7 C