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луч падает из стекла в воздухе под углом 45 градусов покажите примерно на чертиже ход преломленого луча
Ответы 1
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На рисунке показан примерный ход луча, переходящего из среды Воздух в среду Стекло
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Автор:
goonie - 5 лет назад
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- из центра О к хорде DE,равной 18 см,проведен перпендикуляр ОС. Надите длину перпендикуляра,если угол ODC=45 градусов
- ООООООООООООООООООООООООЧЕНЬ НАДО , СРОООООООЧНО!!!!!!!!!!!очечный источник света освещает непрозрачный диск радиусом 189 мм. Расстояние от источника до диска в 3 раз(-а) меньше, чем расстояние от диска до экрана, на котором наблюдатель видит тень. Чему равен диаметр от тени диска, и во сколько раз площадь тени больше площади диска? Ответ (округли до десятых): диаметр тени равен см; площадь тени в раз(-а) больше площади диска.
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