Предмет: Физика, автор: bftvvhtrgh

Одна задачка по физике, 100 баллов

Приложения:

Ответы

Автор ответа: M1KITA
1

Ответ:

На 40%

Объяснение:

Полная энергия частицы, движущейся с релятивистской скоростью даётся выражением E = sqrt(p^2*c^2 + m^2 * c^4). Импульс тела связан с его скоростью и массой как:

p = mv/sqrt(1 - v^2/c^2). Подставляя сюда v = 0.7c получаем:

p = 0.7c * m/sqrt(1 - 0.49) = 0.7c/sqrt(0.51) * m.

Далее, идем в формулу выше:

E = sqrt(0.49/0.51 * m^2 * c^4 + m^2 * c^4) = mc^2 * sqrt(49/51 + 1) = mc^2 * sqrt(100/51). Выразим это в процентах, поделив на энергию покоя mc^2:

sqrt(100/51) - 1 = 0.4;

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