November 2021 0 21 Report
Сколько времени будет нагреваться 1,2 кг воды от 15 °С до 100 °С в электрическом чайнике мощностью 500 Вт, если КПД =85%. Какова
стоимость электроэнергии при тарифе Т = 4 коп/ (кВт-ч.)
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