Question: 1 2 - 0 , 5 c m ap nda ve 1 2 0 C y zey s cakl na sahip 5 0 cm uzunlu

12-0,5cmapnda ve 120C yzey scaklna sahip 50 cm uzunluunda,800 W'lk bir elektrikli diren istma eleman balangta 20C de 60 kg suya daldrlr. Bu isitcnn su scakln80C'ye karmas iin ne kadar zaman gemesi gerektiini belirleyin. Ayrca, istma ileminin banda ve sonunda konveksiyon is transfer katsaylarn belirleyin.
1 2 - 0 , 5 c m ap nda ve 1 2 0 C y zey s cakl na

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