Ответ:
Q=cm(t2-t1), Q=400Дж/кг•°с•2кг•(200-30)=136000Дж=
=136кДж
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Ответ:
Q=cm(t2-t1), Q=400Дж/кг•°с•2кг•(200-30)=136000Дж=
=136кДж