Предмет: Физика, автор: disgustingugh7

2. Залізничні рейки або інші металеві балки виготовляють способом прокату. Для цього розігрітий до білого розжарення сталевий виливок пропускають між котками- вальцями, на поверхні яких є канавки відповідно до форми рейки, і він, деформу- ючись, набирає потрібної форми. Сталевий виливок пропускають крізь вальця по кілька разів, не нагріваючи його додатково. За рахунок чого підтримується потріб- на температура сталі під час прокату? А за рахунок виконуваної механічної роботи Б за рахунок внутрішньої енергії в за рахунок теплопровідності Г правильної відповіді немає

Ответы

Автор ответа: olavradi380

Ответ:

Объяснение:

томущо не викунують рейки механічну роботу вони проводять тепло и виробляють енергию

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