решение задачи по физике

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Uploaded: 25.12.2014
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В "рельсотроне", или электромагнитной пушке, снаряд разгоняется магнитным полем. Какова должна быть длина разгонного участка "рельсотрона", чтобы снаряд за t = 0,01 с разгонялся до скорости v = 8 км/с? Считая силу магнитного воздействия на снаряд постоянной, определить, во сколько раз она превышает вес снаряда на поверхности Земли.

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