Вопрос школьника по предмету Физика
маса электрона в три раза больше за масу покоя.Определить импульс электрона
Ответ учителя по предмету Физика
основные формулы релятивисткой физики
m=m0/√(1-v²/c²) m0 масса покоя с — скорость света
p=m0*v/√(1-v²/c²)
m=3m0 3m0=m0/√(1-v²/c²) 1/√(1-v²/c²)=3
1-v²/c²=1/9 v²/c²=1-1/9=8/9 v²=8/9*c² v= 2√2/3*c²
m0 элетрона = 9,11*10⁻³¹ кг с=300 000 км/сек=300 000 000 м/сек=
=3*10⁶ м/сек.
р=9,11*10⁻³¹*2√2*9*10¹²*3/3≈232*10⁻¹⁹ кг-м/сек
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