Question

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.

Answer #1

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 = 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 = 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 = 4.05 nC is placed at the origin,
and a second point charge q2 = -3.05 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
q1and 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 if...

A point charge q2 = - 7.00 nC is located at the origin and
charge q1 = 5.00 nC is on the x-axis, 40.0 cm from the origin.
a) Find the magnitude and direction of electric field at point
P, which has coordinates (40.0 cm,-50.0 cm).
b) Find the force on a charge of 5.00 µC placed at point P.

A point charge q2 = - 7.00 nC is located at the origin and
charge q1 = 5.00 nC is on the x-axis, 40.0 cm from the origin.
a) Find the magnitude and direction of electric field at point
P, which has coordinates (40.0 cm,-50.0 cm).
b) Find the force on a charge of 5.00 µC placed at point P.

A -4.00 nC point charge is at the origin, and a second +8.00 nC
point charge is on the x-axis at x = 60 cm.
Find the net electric force that the two charges would exert on
a proton placed at x = 30cm?
At what location would the net electric field due to the two
charges be zero?

Charge q1 = 5.5 nC is located at the
coordinate system origin, while charge q2 =
-4.61 nC is located at (a, 0), where a = 0.55 m.
The point P has coordinates (a, b), where
b = 0.25 m. A third charge q3 = 19 nC
will be placed later.
a) Find the electric potential VP at point
P, in volts. Assume the potential is zero at infinity.
b) How much work W, in joules, would you have to...

Two charges are fixed on the x-axis. The first, Q1 =
5.230 nC, is placed at the origin. The second, Q2 =
8.026 nC, is placed at the point (6.00 m, 0 m). Determine the
x-coordinate where a third charge, Q3 = 4.730 nC, can be
place so that the net force on it is zero.

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...

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