Q=mc(t2-t1)
c=4200 Дж/кг*С
Q=5*4200(100-20)=1680000Дж=1680кДж
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Q=mc(t2-t1)
c=4200 Дж/кг*С
Q=5*4200(100-20)=1680000Дж=1680кДж