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Консультация № 137119
16.05.2008, 19:56
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4.3. Заряженная частица, ускоренная разностью потенциалов 600 кВ, имеет скорость 5,4 Мм/с. Определить удельный заряд частицы. 4.4. Протон, начальная скорость которого 100 км/с, влетел в однородное электрическое поле с напряженностью 300 В/ см вдоль вектора напряженности. На каком пути скорость протона удвоится?
Обсуждение
16.05.2008, 21:12
общий
это ответ
Здравствуйте!
4.3 m*v^2/2=U*q
Удельный заряд q/m=v^2/(2U)=(5.4*10^6)^2/(2*6*10^5)=24.3*10^6 Кл/кг
4.4 v1=10^5 м/с v2=2*10^5 м/с m=1.67*10^-27 кг
Кинетическая энергия W1=m*v1^2/2=1.67*10^-17 Дж
W2=m*v2^2/2=6,68*10^-17 Дж
Работа электрических сил A=W2-W1=5.01*10^-17 Дж
A=E*l*q q=e=1.60*10^-19
l=A/(E*q)=1.04 см
4.3 m*v^2/2=U*q
Удельный заряд q/m=v^2/(2U)=(5.4*10^6)^2/(2*6*10^5)=24.3*10^6 Кл/кг
4.4 v1=10^5 м/с v2=2*10^5 м/с m=1.67*10^-27 кг
Кинетическая энергия W1=m*v1^2/2=1.67*10^-17 Дж
W2=m*v2^2/2=6,68*10^-17 Дж
Работа электрических сил A=W2-W1=5.01*10^-17 Дж
A=E*l*q q=e=1.60*10^-19
l=A/(E*q)=1.04 см
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