Q=cm(t2-t1)
m=50г=0.05кг
Q=920*0.05*(90-20)=3220Дж
Ответ:3220Дж
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Q=cm(t2-t1)
m=50г=0.05кг
Q=920*0.05*(90-20)=3220Дж
Ответ:3220Дж