В вакууме 299 792 км/с. Пользуясь таблицей, определите, в каких средах свет пройдёт то же самое расстояние менее чем за 19 минут? ответ кратко поясните.  Скорость света в различных средах 
Среда Скорость, км/с 
Воздух 299 704 
Лёд 228 782 
Вода 225 341 
Стекло 199 803 
Кедровое масло 197 174 
Кварц 194 613 
Рубин 170 386 
Алмаз 123 845

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She became the first woman to be awarded this title in the great patriotic war.about the feat zoe kosmodemyanskaya already in 1944, he made the film, the monuments, written poems and named in her honor hundreds of streets.the victory in the great patriotic war - the feat and the glory of our nation. zoya a. kosmodemyanskaya ("tanya") - hero of the soviet union. zoya kosmodemyanskaya was born september 8, 1923 in the village in tambov region. in school she was very ill , but was a good student and was very fair . 31 october 1941 zoe voluntarily became a fighter. the training was very short - 4 november zoe threw in city volokolamsk.she successfully overcame all the difficulties. november 18, 1941 part of zoe received a combat mission - destroy 10 settlements.in part one of the groups went on the job and zoya.at the village golovko group zoe came under fire and collapsed.she alone burned homes.zoe was taken prisoner , over her terribly tortured by the germans, but she was brave.29 november 1941, zoya kosmodemyanskaya was hanged .  27 january 1942 about feat zoe kosmodemyanskaya was the first article in the press.

А=53см                                                 а=47см в=23см                                                 в=52см h=18см                                                 h=23см s=? см2                                                 s=? см2 v=? см3                                                 v=? см3 s=53*23=1219см2                                   s=47*52=2444см2 v=53*23*18=21942см3                           v=47*52*23=56212см3 ответ: s=1219см2; v=21942см3.               ответ: s=2444см2; v=56212см3