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SORU 3) ( 11 mathrm{~cm} ) kalnlnda elik bir plaka scakl ( 15{ }^{circ} mathrm{C} ) |ken ( 280^{circ} mathrm{C} ) scaklndaki bir sl ilem
SORU 3) ( 11 mathrm{~cm} ) kalnlnda elik bir plaka scakl ( 15{ }^{circ} mathrm{C} ) |ken ( 280^{circ} mathrm{C} ) scaklndaki bir sl ilem frnna koyuluyor. Plaka yzeyi ile firn iindeki hava arasndaki s transfer katsays ( 150 mathrm{~W} /left(mathrm{m}^{2} cdot mathrm{K} ight) ), Lplakann is iletim katsays ( 25 mathrm{~W} /(mathrm{m} cdot mathrm{K}) ), , Isil yaym katsays ( 2,4.10^{-5} mathrm{~m}^{2} / mathrm{s} ) olduuna gre a) Plaka yzey scaknn ( 200^{circ} mathrm{C} ) olmas iin geen sreyi hesaplaynz? b) Bu srede plakann birim alanna transfer edilen sy hesaplaynz? (35 puan)
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