Question

A point charge has 2.65x108 more protons than electrons. a) Calculate the charge on the particle. b) Calculate the electric field at a distance of 0.325 m from the point charge. c) Calculate the electric potential at a distance of 0.325 m from the point charge

Answer #1

a) A particle with a charge of -4.0 μC and a mass of 4.9 x
10-6 kg is released from rest at point A and accelerates
toward point B, arriving there with a speed of 83 m/s. The only
force acting on the particle is the electric force. What is the
potential difference VB -
VA between A and B? If VB
is greater than VA, then give the answer as a
positive number. If VB is less than
VA,...

A helium nucleus (called an alpha particle) contains 2 neutrons
and 2 protons with no electrons. If any electrons are added, there
is a negligible amount of mass added but obviously one negative
charge per electron is added. Three particles are injected into a
constant B-field of 2T at a velocity of
3×106ms. The first
particle is only the alpha particle
(He++), the second particle is a nucleus
with 1 electron (He+), and the third
particle is a nucleus with...

A stationary point particle has a charge of 4.2x10-6
C. This particle is accelerated to a velocity of 2.1x106
m/s by an external force under a potential difference ΔV=24 V,
calculate the mass of this point particle.

1. A point charge - and a conducting solid sphere of charge
density +a(C/m?) and radius a are shown in Figure I (centers of
both charges are al 2a distance from the origin o)
a) Draw the electric field vectors at the origin 0. (4 pts)
b) Determine the direction and magnitude of the NET electric
field E, at origin O. (11 pts) +(C/m?) e) Calculate the NET
electric potential V at the origin O(10 pts)

1.A particle of charge q and mass m experiences a uniform
electric field E. If the particle starts at rest, find
(a) its speed after it has travelled a distance d and
(b) the magnitude of the electric potential difference through
which it passed
2. Find the electric field of a uniformly charged solid sphere
both inside and outside the sphere if the total charge is Q0 and
the radius of the sphere is d.

In a constant uniform electric field, a particle with charge
−100 ?? is moved from the origin a distance ? = 0.80 ? straight in
the direction of the electric field lines. The field has a strength
of 5.0 ? ? .
a) What is the voltage difference between the initial and final
position?
b) How much work is done to move the charge?
c) Does the charge gain or lose electrical potential energy in
the process of this move?...

Protons are released from rest in a Van de Graaff accelerator
system. The protons initially are located where the electric
potential has a value of 5.95 MV and then they travel through a
vacuum to a region where the potential is zero.
(a) Find the final speed of these protons.
m/s
(b) Find the accelerating electric field strength if the potential
changed uniformly over a distance of 2.60 m.
MV/m

An electric field has an electric field strength 6000. N/C at a
distance of 1.5 m. What is the strength of the field at a distance
of 6.0 m?
24. An alpha (α) particle is positioned in an electric field
such that the gravitational force acting on it is equal to the
electrostatic force.
(qα = 3.2 x 10–19 C and mα = 6.64
x 10–27 kg)
a) What is the direction of the
electric field at this point?...

A point particle with charge
q = 4.6 μC
is placed on the x axis at
x = −10 cm
and a second particle of charge
Q = 7.0 μC
is placed on the x axis at
x = +25 cm.
(a) Determine the x and y components of the
electric field due to this arrangement of charges at the point
(x, y) = (10, 10)
(the units here are centimeters).
Ex
= N/C
Ey
= N/C
(b) Determine the magnitude and...

a)
A particle (charge = 70 μC) moves in a region where the only
force on it is an electric force. As the particle moves 25 cm from
point A to point B, its kinetic energy increases by 4.2 mJ.
Determine the electric potential difference, VB - VA. (in
Volts)
b)
Points A [at (3, 1) m] and B [at (8, 8) m] are in a region where
the electric field is uniform and given by
E→=(4iˆ+3jˆ)E→=4i^+3j^A- VB? (in Volts)

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