Question

A positively charged particle moves in the positive z-direction.
The magnetic force on the particle is in the positive y-direction.
What can you conclude about the
**z****-component** of the
**magnetic field** at the particle’s position?

A. B_{x} > 0

B. B_{x} = 0

C. B_{x} < 0

D. Not enough information to decide

THE ANSWER IS NOT D ACCORDING TO MY PROFESSOR. PLEASE EXPLAIN.

Answer #1

thanks

A magnetic field exerts a force on a charged particle.
to. if the particle is at rest
b.if the particle moves through the direction of the magnetic
field
c. never
d. if the particle moves along the direction of the magnetic
field
e. always

A
magnetic field exerts a force on a charged particle a) if the
particle is at rest b) if the particle moves along the direction of
the magnetic field c) always. d) never. e) if the particle moves
through the direction of the magnetic field

Assume a charged object with a mass of 9.6 gram moves in the
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field is in the positive y-axis, calculate the magnitude and the
direction of the magnetic force act on this object.
Select one:
a. 6.8x10-5 N, in the...

Assume a charged object with a mass of 4.8 gram moves in the
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This object enters in a region of magnetic field of B. If the
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is 3.2 µN in the positive z-axis, calculate the magnitude and the
direction of the magnetic field.
Select one:
a. 5.7x10-4 T, in the negative direction of...

A charged particle moves without experiencing magnetic force. We
can conclude that:

A charged particle of mass m = 4.6X10-8 kg, moving
with constant velocity in the y-direction enters a region
containing a constant magnetic field B = 2.3T aligned with the
positive z-axis as shown. The particle enters the region at (x,y) =
(0.79 m, 0) and leaves the region at (x,y) = 0, 0.79 m a time t =
409 μs after it entered the region.
1. With what speed v did the particle enter the region
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1. A particle of positive charge q and mass m
enters parallel uniform electric and magnetic fields (of magnitudes
E and B, respectively) both directed in the +z direction with a
velocity v = v0i
perpendicular to both fields.
(a) What is the the particle’s initial acceleration? You can
give your answer as a vector in component form.
(b) What is the radius of the particle’s path (looking down the
z-axis) if the magnetic field is B =
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A particle with a charge of 37 μC moves with a speed of 77 m/s
in the positive x direction. The magnetic field in this region of
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Part A:
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Express your answer using two significant figures.
Part B:
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Please write the equation for magnetic force on a particle. For
each option please say whether the magnetic field could or could
not exert a force on a particle and say why, referencing the
magnetic force equation.
a) The particle moves perpendicular to the field.
b) The particle is at rest.
c) The particle is charged.
d) The particle moves parallel to the field.
e) The magnitude of the magnetic field changes with time.

Please write the equation for magnetic force on a particle. For
each option please say whether the magnetic field could or could
not exert a force on a particle and say why, referencing the
magnetic force equation.
a) The particle moves perpendicular to the field.
b) The particle is at rest.
c) The particle is charged.
d) The particle moves parallel to the field.
e) The magnitude of the magnetic field changes with time.

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