Question

5. Suppose we have a stationary external magnetic field B. We have a negatively charged particle of charge $|q|$ and mass m. Initially, it is moving as shown in the figure below. The particle can move freely in x and y directions. (a) Plot the horizontal velocity and position of the particle and provide the corresponding expressions. Consider the origin to be the center of the particle's path. (Two plots, two expressions) B vx $-|q|$, m $v_0$ vx(t) = ? t x x(t) = ? t vx (b) Keeping the same origin, let the B field be flipped and repeat the plots from part (a). How are the plots different? (Two plots, one short answer) vx(t) = ? t x x(t) = ? t

          5. Suppose we have a stationary external magnetic field B. We have a negatively charged particle of
charge $|q|$ and mass m. Initially, it is moving as shown in the figure below. The particle can move
freely in x and y directions.
(a) Plot the horizontal velocity and position of the particle and provide the corresponding
expressions. Consider the origin to be the center of the particle's path. (Two plots, two
expressions)
B
vx
$-|q|$, m
$v_0$
vx(t) = ?
t
x
x(t) = ?
t
vx
(b) Keeping the same origin, let the B field be flipped and repeat the plots from part (a). How are
the plots different? (Two plots, one short answer)
vx(t) = ?
t
x
x(t) = ?
t

5. Suppose we have a stationary external magnetic field B. We have a negatively charged particle of
charge |q| and mass m. Initially, it is moving as shown in the figure below. The particle can move
freely in x and y directions.
(a) Plot the horizontal velocity and position of the particle and provide the corresponding
expressions. Consider the origin to be the center of the particle's path. (Two plots, two
expressions)
B
vx
-|q|, m
v0
vx(t) = ?
t
x
x(t) = ?
t
vx
(b) Keeping the same origin, let the B field be flipped and repeat the plots from part (a). How are
the plots different? (Two plots, one short answer)
vx(t) = ?
t
x
x(t) = ?
t

Added by Marc W.

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