T-температура после того, как установится тепловое равновесиес1-удельная теплоемкость воды =4200 дж/кг*кс2-удельная теплоемкость льда =2110 дж/кг*кλ- удельная теплота плавления льда=330 кдж/кг*к вода охлаждаетсяq1=c1*m1*(t1-t)=4200*0.200*([273+18]-t) лед нагревается от т2= -20 гр. по цельсию до температуры 0 град с q2=c2*m2*(0-t2)=2110*0.030*(0-[-20])=1266 джлед плавитсяq3=λm2=330000*0.030=9900 джвода из расплавленного льда нагревается q4=c1*m2*(t-0)=4200*0.030*t
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Объяснение:
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