To=20 stopni
Tk=?
m=2kg
Q=42kJ=42000J
cw=4200 J/kg x stopien C
Q= cw x m x ΔT
Q= cw x m x (Tk-To)
Tk-To= Q:(cw x m)
Tk= Q:(cw x m) + To
Tk= 42000 : (4200 x 2) +20= 25 stopni
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To=20 stopni
Tk=?
m=2kg
Q=42kJ=42000J
cw=4200 J/kg x stopien C
Q= cw x m x ΔT
Q= cw x m x (Tk-To)
Tk-To= Q:(cw x m)
Tk= Q:(cw x m) + To
Tk= 42000 : (4200 x 2) +20= 25 stopni