Question

Two-point charges, q_{1} = 25 nC and q_{2} = -75
nC are separated by a distance r = 3.0 cm. Find the force between
the two charges.

Answer #1

Force between two charges can be find using below formula

Where

Point charges Q1 = 1 nC and Q2 = 2 nC are at a distance apart.
Which of the following
statements are incorrect?
Select one or more:
As the distance between them decreases, the force on Q1
increases linearly.
The force on Q2 is the same in magnitude and direction as that
on Q1.
The force on Q2 is along the line joining them.
A point charge Q3 = -3 nC located at the midpoint between Q1
and Q2, Q3...

Two
point charges Q1
=
+4.90 nC
and Q2 =
−2.20 nC are
separated by 45.0 cm.
(a) What is the electric potential at a point midway between the
charges?
V
(b) What is the potential energy of the pair of charges?
J
What is the significance of the algebraic sign of your answer?
Positive work must be
done to separate the charges.Negative work must be done
to separate the charges.

Two charges, Q1 and Q2, are separated by
6·cm. The repulsive force between them is 25·N. In each case below,
find the force between them if the original
situation is changed as described.
(a) The magnitude of charge Q1 is reduced to
Q1/5. N
(b) The distance between the charges is reduced to
2·cm. N
(c) The magnitude of charge Q2 is increased to
5Q2 and the distance is increased to
30·cm. N

Two particles having charges q1 = 0.400 nC and
q2 = 6.00 nC are separated by a distance of 1.60 m .
At what point along the line connecting the two charges is the
total electric field due to the two charges equal to zero?

Three charges, q1 = 9.0 nC, q2 = 5.0 nC, and q3 = –3.0 nC are
arranged in a right angle triangle as shown in the diagram. The
distance between q1 and q2 is r12 = 6.0 cm, and the distance
between q2 and q3 is r23 = 3.0 cm. Positive x is taken to the right
and positive y is taken upward.
I can not upload the graph so q2 at (0,0) q1 at (-6,0) q3 at
(0,-3)
question...

Point charges q1=− 4.90 nC and q2=+ 4.90 nC are separated by
distance 3.90 mm , forming an electric dipole.
Part A
Find the magnitude of the electric dipole moment.
Express your answer in coulomb meters to three significant
figures.
Part B
What is the direction of the electric dipole moment?
Part C
The charges are in a uniform electric field whose direction
makes an angle 36.7 ∘ with the line connecting the charges. What is
the magnitude of this...

Two point charges, Q1 = -30 ?C and Q2
= 56 ?C , are separated by a distance of 12 cm. The
electric field at the point P (see the figure(Figure 1)) is zero.
How far from Q1 is P?

Part A) Two particles with positive charges q1 and
q2 are separated by a distance s.
Along the line connecting the two charges, at what distance from
the charge q1 is the total electric field from the two charges
zero?
Express your answer in terms of some or all of the
variables s,
q1,
q2 and
k =14πϵ0. If
your answer is difficult to enter, consider simplifying it, as it
can be made relatively simple with some work.
Part B)...

Two charges, q1 = 5 μC and q2 = 7 μC, are separated by 25 cm.
Where should a third charge be placed on the line between them such
that the resultant force on it will be zero? Does it matter if the
third charge is positive or negative?

A point charge q1=4.20 nC is fixed at the origin. A second point
charge q2=−7.80 nC is fixed at the point x=15.0 cm.
(a) Find the point on the +x axis where the electric potential
is zero.
(b) A third charge, q3=−2.30 nC is then placed at the point
x=20.0 cm. Find the net force acting on charge q2 due to the other
two charges.

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