Вроде, динамометр.Если это касается относительно физики.
Q=Lm-формула для теплоты парообразования.Из нее выражаем m
m=Q/L,так как L=2256 кДж/кг
m=4,5 кДж/2256 кДж/кг
m=0,002кг
Ответ.0,002кг
Блин, не на моем языке, а жаль. Думаю, решила бы
<span><span><span><span>Цвет</span></span></span></span><span><span><span><span>Длина волны (н/м)</span></span></span></span><span><span><span><span>Частота колебаний в секунду (млрд)</span></span></span></span><span><span><span><span>Красный</span></span></span></span><span><span><span><span>800-650;</span></span></span></span><span><span><span><span>400-470</span></span></span></span><span><span><span><span>Оранжевый</span></span></span></span><span><span><span><span>640-590;</span></span></span></span><span><span><span><span>470-520</span></span></span></span><span><span><span><span>Желтый</span></span></span></span><span><span><span><span>580-550;</span></span></span></span><span><span><span><span>520-590</span></span></span></span><span><span><span><span>Зеленый</span></span></span></span><span><span><span><span>530-490;</span></span></span></span><span><span><span><span>590-650</span></span></span></span><span><span><span><span>Голубой</span></span></span></span><span><span><span><span>480-460;</span></span></span></span><span><span><span><span>650-700</span></span></span></span><span><span><span><span>Синий</span></span></span></span><span><span><span><span>450-440;</span></span></span></span><span><span><span><span>700-760</span></span></span></span><span><span><span><span>Фиолетовый</span></span></span></span><span><span><span><span>430-390;</span></span></span></span><span><span><span><span>760-800</span></span></span></span>