Дано: m=200г=0.2кг; t1=100C ;t2=20C; c=4200
Q=cm(t2-t1)=4200*0.2*(20-100)=-67200ДЖ
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Дано: m=200г=0.2кг; t1=100C ;t2=20C; c=4200
Q=cm(t2-t1)=4200*0.2*(20-100)=-67200ДЖ