Question

1. The force between two charges is 4×10−9N. If the magnitude of one charge reduced by a factor of two and the distance between the charges is reduced by a factor of two, what is the new force between the charges?

2. What is the magnitude of the electric field from 20cm from a point charge of q=33nC?

3. What is the electric field 10cm from a 50-cm-radius metal sphere carrying −4.5×106C of charge?

4. Point charges are located at each corner of a square with sides of 5.0cm. The top-left q1=8.0nC charge is q2=4.0nC. The top-right charge is The bottom-right charge is q3=4.0nC The bottom-left charge is q4=8.0nCWhat is the electric field at the point midway between charges q2 and q3?

Answer #1

4 charges are fixed to the corners of a square of side 0.53cm.
Charge 1 of -1uC is fixed to the top left corner. Charge 2 of -2uC
is fixed to the right corner, charge 3 of 3uC is fixed to the
bottom left corner, and charge 4 of -4uC is fixed to the bottom
right corner. A) Find the magnitude and direction of the electric
field at the center of the square. B) Find the potential at the
center....

There are two particles of charge q=2 nC located on the top left
and bottom right comers of a square with side a = 10 cm. What is
the magnitude and direction of the net electric field at the point
on the bottom left corner of the square? Find the force acting on
the charge q0=5nC at this corner.

Three point charges and a test charge are used to create a
square with a length of 2 meters on each side. q1(bottom left) has
a charge of 1 nC. q2(top left) has a charge of -2 nC. q3(top right)
has a charge of 3 nC. q4(bottom right) is the test charge.
Calculate E at the test charge.

1. Two charges are fixed on the x-axis. The first charge, q1 =
+7.7 nC is located at x = 0. The second charge, q2 = -1.1 nC is
located at x = 0.25 m.
a) ( Is the force between these charges attractive or
repulsive?
b) What is the magnitude of the force?
c) In what region is the electric field most likely to be zero?
(1) to the left of q1, (2) between the charges, or (3) to...

Coulomb's law for the magnitude of the force F between two
particles with charges Q and Q′ separated by a distance d is
|F|=K|QQ′|d2, where K=14πϵ0, and ϵ0=8.854×10−12C2/(N⋅m2) is the
permittivity of free space. Consider two point charges located on
the x axis: one charge, q1 = -10.0 nC , is located at x1 = -1.695 m
; the second charge, q2 = 31.0 nC , is at the origin
(x=0.0000).
What is the net force exerted by these two...

Coulomb's law for the magnitude of the force F between two
particles with charges Q and Q′ separated by a distance d is
|F|=K |QQ'|/d2
where K=1/4πϵ0 , and
ϵ0=8.854×10-12
C2/(N⋅m2) is the permittivity of free
space.
Consider two point charges located on the x axis: one
charge, q1 = -17.0 nCn, is located at X1 = -1.680 m ;
the second charge, q2 = 30.0 nC , is at the origin (x = 0).
What is (Fnet3)x, the x-component...

Three point charges q1=1 μC ,
q2=2 μC and q3=-3
μC are located at three corners of a square of side a=2
cm . Charge
q3 is
located diagonally opposed to the empty corner of the
square.
Calculate the electric potential created by the three charges
at the empty corner of the square.
Calculate the work done by the electric field of the three
charges when a fourth charge q4=-4 μC
moves from the center of the square to the...

Two stationary positive point charges, charge 1 of magnitude
3.75 nC and charge 2 of magnitude 1.55 nC , are separated by a
distance of 36.0 cm . An electron is released from rest at the
point midway between the two charges, and it moves along the line
connecting the two charges. What is the speed vfinal of the
electron when it is 10.0 cm from charge 1?

Two stationary positive point charges, charge 1 of magnitude
3.80 nC and charge 2 of magnitude 1.80 nC , are separated by a
distance of 55.0 cm . An electron is released from rest at the
point midway between the two charges, and it moves along the line
connecting the two charges.
1. What is the speed vfinal of the electron when it is
10.0 cm from charge 1?

Two stationary positive point charges, charge 1 of magnitude
3.40 nC and charge 2 of magnitude 1.75 nC , are separated by a
distance of 40.0 cm . An electron is released from rest at the
point midway between the two charges, and it moves along the line
connecting the two charges.
Part A-) What is the speed vfinal of the electron when
it is 10.0 cm from charge 1?

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