Ist426982 em 20h06min de 2 de março de 2017

2017-03-02T20:06:08Z

Ist426982: Criou a página com "(D. R. Nicholson ~2.1) Consider a particle of charge \(q>0\) and mass \(m\), initially at rest at \((x,y,z)=(0,0,0)\), in the presence of a static magnetic field \(\vec{B}=B..."

2017-03-02T20:04:54Z

Criou a página com "(D. R. Nicholson ~2.1) Consider a particle of charge \(q>0\) and mass \(m\), initially at rest at \((x,y,z)=(0,0,0)\), in the presence of a static magnetic field \(\vec{B}=B..."

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(D. R. Nicholson ~2.1)
Consider a particle of charge \(q>0\) and mass \(m\), initially at rest at \((x,y,z)=(0,0,0)\),
in the presence of a static magnetic field \(\vec{B}=B_0\vec{u}_z\) and \(\vec{E}=E_0\vec{u}_y\), with \(E_0,B_0>0\).

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Linha 2:		Linha 2:
	Consider a particle of charge \(q>0\) and mass \(m\), initially at rest at \((x,y,z)=(0,0,0)\),		Consider a particle of charge \(q>0\) and mass \(m\), initially at rest at \((x,y,z)=(0,0,0)\),
	in the presence of a static magnetic field \(\vec{B}=B_0\vec{u}_z\) and \(\vec{E}=E_0\vec{u}_y\), with \(E_0,B_0>0\).		in the presence of a static magnetic field \(\vec{B}=B_0\vec{u}_z\) and \(\vec{E}=E_0\vec{u}_y\), with \(E_0,B_0>0\).
		+
		+	(a) Sketch the orbit of the particle.
		+
		+	(b) Derive an exact expression for the orbit of the particle.
		+
		+	(c) Show that the orbit can be separated into an oscillatory term and a constant drift term.
		+	After averaging in time over the oscillatory motion, is there any net acceleration?
		+	If not, how are the forces balanced?
		+
		+	(d) In a neutral plasma, with positive and negative particles and ions of different masses, would there be any net current?
		+
		+	(e) Suppose the electric field were replaced by a gravitational force in the \(yy\) direction, would there be a net current?

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Ist426982 em 20h06min de 2 de março de 2017

Ist426982: Criou a página com "(D. R. Nicholson ~2.1) Consider a particle of charge \(q>0\) and mass \(m\), initially at rest at \((x,y,z)=(0,0,0)\), in the presence of a static magnetic field \(\vec{B}=B..."