Question

What is the force between a charge of 5 µC and 6 µC when they are spaced 4.5 cm apart?

Two equal but opposite charges, Q = 18e, are separated by a distance d = 5 mm. What is the electric field at the point P, which is a distance x = 22 µm from the positive charge? The two charges and point P are all along a single straight line.

One electron is placed 4.4 cm from a stationary 4e charge. How fast will the electron be traveling when it reaches the stationary charge? You can find the electron charge and electron mass in the front cover of your book.

Consider a point charge generating an electric field. At a distance of 19.7 cm from the charge, the magnitude of the electric field is 7.3 V/m. What is the electric potential at the same distance?

Two parallel plates each with 14 nC of charge stored on them,
and an area of 0.142 m^{2}. The voltage across the plates
is 4 V. What is the space between the places in mm?

Answer #1

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?

Two stationary positive point charges, charge 1 of magnitude
3.25 nC and charge 2 of magnitude 2.00 nC , are separated by a
distance of 42.0 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
4.00 nC and charge 2 of magnitude 1.55 nC, are separated by a
distance of 47.0 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?
Express your answer in meters per second.

Two stationary positive point charges, charge 1 of magnitude
3.70 nC and charge 2 of magnitude 1.50 nC , are separated by a
distance of 46.0 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?
Express your answer in meters per second.

Two stationary positive point charges, charge 1 of magnitude
3.90 nC and charge 2 of magnitude 2.00 nC , are separated by a
distance of 30.0 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?
Express your answer in meters per second.

How strong is the attractive force between a glass rod with a
+0.9 µC charge and a silk cloth with a -0.5 µC charge, which are
15.0 cm apart, using the approximation that they act like point
charges?
A.
0.26 N
B.
1.8x1011 N
C.
0.18 N
D.
0.027 N
Find the electric field at the location of qa using
the figure below given that qb = qc =
qd = +2.0 nC and q = -1.0 nC, and the...

Two stationary positive point charges, charge 1 of magnitude
3.50 nC and charge 2 of magnitude 1.85 nC , are separated by a
distance of 57.0 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 vfinall of the electron when it is 10.0 cmcm
from charge 1? PLEASE SHOW WORK

1. What potential difference is needed to accelerate a He+ ion
(charge +e, mass 4u) from rest to a speed of 1.1×106 m/s
?
2. Two 2.00 cm × 2.00 cm plates that form a parallel-plate
capacitor are charged to ± 0.708 nC .
a) What is the electric field strength inside the capacitor if
the spacing between the plates is 1.30 mm ?
b)What is potential difference across the capacitor if the
spacing between the plates is 1.30 mm...

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