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Консультация № 161040
20.02.2009, 22:22
0.00 руб.
0
1
1
Помогите решить задачи: 1) Собственное время жизни [$956$]-мезона составляет τ0 = 2,21•10-6с. Определить, прилетают ли [$956$]-мезоны, наблюдаемые у поверхности Земли, из мирового пространства или рождаются в земной атмосфере. Скорость [$956$]-мезона относительно Земли принять равной 0,99 с.
2)С помощью метода векторных диаграмм найти результирующую амплитуду и фазу суммарного колебания: S = A*cos[$969$]t+ A/2*cos([$969$]t + [$8719$]/2) + A/4*cos([$969$]t + [$8719$]) + A/8*cos([$969$]t + 3/2[$8719$]).
2)С помощью метода векторных диаграмм найти результирующую амплитуду и фазу суммарного колебания: S = A*cos[$969$]t+ A/2*cos([$969$]t + [$8719$]/2) + A/4*cos([$969$]t + [$8719$]) + A/8*cos([$969$]t + 3/2[$8719$]).
Обсуждение
Неизвестный
22.02.2009, 22:42
общий
это ответ
Здравствуйте, Гавриловец Евгений Иванович!
1) За такое малое время мюон много не пролетит даже со скоростью света, поэтому приходится сделать вывод, что мюоны рождаются в атмосфере.
Давайте оценим, на что он способен.
Нужно учесть, что у быстро движущегося мюона собственно время течёт медленнее, и пока по его часам проходит время жизни, по нашим часам пройдёт в (1-(v/c)^2)^{-1/2}=7 раз больше, т.е. примерно 15мкс. За это время даже со скоростью света можно пролететь 4,5км, а высота атмосферы явно больше (как минимум 10км).
1) За такое малое время мюон много не пролетит даже со скоростью света, поэтому приходится сделать вывод, что мюоны рождаются в атмосфере.
Давайте оценим, на что он способен.
Нужно учесть, что у быстро движущегося мюона собственно время течёт медленнее, и пока по его часам проходит время жизни, по нашим часам пройдёт в (1-(v/c)^2)^{-1/2}=7 раз больше, т.е. примерно 15мкс. За это время даже со скоростью света можно пролететь 4,5км, а высота атмосферы явно больше (как минимум 10км).
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