Question

A point charge *q*1 = 4.05 nC is placed at the origin,
and a second point charge *q*2 = -3.05 nC is placed on the
*x*-axis at *x*=+ 21.0 cm . A third point charge
*q*3= 1.90 nC is to be placed on the *x*-axis between
*q*1and *q*2. (Take as zero the potential energy of
the three charges when they are infinitely far apart.)

PART A - What is the potential energy of the system of the three
charges if *q*3 is placed at *x*=+ 11.0 cm ?

PART B - Where should *q*3 be placed between *q*1
and *q*2 to make the potential energy of the system equal to
zero?

Answer #1

A point charge q1 = 4.10 nC is placed at the origin, and a
second point charge q2 = -3.10 nC is placed on the x-axis at x=+
21.0 cm . A third point charge q3 = 1.90 nC is to be placed on the
x-axis between q1 and q2. (Take as zero the potential energy of the
three charges when they are infinitely far apart.)
Part A
What is the potential energy of the system of the three charges...

A point charge q1 = 3.90 nC is placed at the origin, and a
second point charge q2 = -2.90 nC is placed on the x-axis at x=+
21.0 cm. A third point charge q3 = 2.00 nC is to be placed on the
x-axis between q1 and q2. (Take as zero the potential energy of the
three charges when they are infinitely far apart.)
a- What is the potential energy of the system of the three
charges if q3...

A point charge q1 = 3.90 nC is placed at the origin, and a
second point charge q2 = -3.10 nC is placed on the x-axis at x=+
20.0 cm . A third point charge q3 = 2.10 nC is to be placed on the
x-axis between q1 and q2. (Take as zero the potential energy of the
three charges when they are infinitely far apart.)
PART A: What is the potential energy of the system of the three
charges...

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.

Two point charges are placed on the x-axis as follows: charge q1
= 4.05 nC is located at x= 0.195 m , and charge q2 = 5.04 nC is at
x= -0.300 m .
Part A
What is the magnitude of the total force exerted by these two
charges on a negative point charge q3 = -6.00 nC that is
placed at the origin?
F= ? N
Part B
What is the direction of the total force exerted by these...

A charge of -2.95 nC is placed at the origin of an
xy-coordinate system, and a charge of 2.05 nC is placed on
the y axis at y = 4.05 cm.
a. If a third charge, of 5.00 nC, is now placed at the point xxx
= 3.05 cm , y = 4.05 cm find the x and y components of the total
force exerted on this charge by the other two charges.
b. Find the magnitude of this force....

Three point charges are arranged along the x axis.
Charge q1 = -4.70 nC is located at x= 0.230 mand
charge q2 = 2.60 nC is at x= -0.320 m . A
positive point charge q3 is located at the origin.
Part A:What must the value of q3 be for the net force
on this point charge to have magnitude 3.00 μN ?
Part B:Where along the x axis can q3 be placed
and the net force on it be...

A charge of -3.05 nC is placed at the origin of an xy-coordinate
system, and a charge of 2.45 nC is placed on the y axis at y = 3.80
cm .
part A) If a third charge, of 5.00 nC , is now placed at the
point x = 3.05 cm , y = 3.80 cm find the x and y components of the
total force exerted on this charge by the other two charges.
part B) Find the...

Three point charges are on the x axis:
q1 is at the origin, q2 is
at x = +3.4 m, and q3 is at x
= +6.5 m. Find the electrostatic potential energy of this system of
charges for the following charge values. (Assume the potential
energy is zero when the charges are very far from each other.)
1)
(a) q1 = q2 =
q3 = +4.2 µC
2)
(b) q1 = q2 = +4 µC and
q3 = -4...

Three point charges are on the x axis: q1 is at the
origin, q2 is at x = +3.8 m, and q3 is at x =
+5.1 m. Find the electrostatic potential energy of this system of
charges for the following charge values. (Assume the potential
energy is zero when the charges are very far from each other.)
(a) q1 = q2 = q3 = +2.7 µC
(b) q1 = q2 = +3.3 µC and q3 =
-3.3 µC
(c)...

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