Question

1a) Two identical positively charged particles experience electric forces of magnitude 209 N when they are separated by 4 cm. Calculate the charge on each particle.

b) Two electrons and a proton are placed on corners of a square with sides 25 cm. The proton is opposite the empty corner. What is the magnitude of the electric force on the proton?

Answer #1

It is placed at the corners of four charged particles,
a square with side lenght d. Particle 1,2 and 4 carry identical
positive charges. The electrical forces exerted on particle 1 What
is the charge of particle 3 in the corner opposite to particle 1 so
that the vector sum is zero?

A positively charged test particle is placed midway between two
fixed, identical positively charged source particles.
If the test particle is replaced by a negatively charged test
particle, is it in a stable or unstable equilibrium at that
location?
The test particle is in a stable equilibrium regardless of
dimensionality.
The test particle is in a stable equilibrium if these particles
are constrained to one dimension and in an unstable equilibrium if
the particles can move in at least two...

Three identical charged particles sit at the corners of an
equilateral triangle of side length 30 cm. Each particle has a
charge of 8.5μc. The charges Q1 and Q2 are positive and Q3 is
negative.
A.) What are the magnitude and the direction of the net force on
charge Q2 is:
B.) What is the total electric potential energy of the charge
combination is

Two positively charged particles, each with charge Q, are held
at positions (-A, 0) and (A, 0) as shown in the following figure. A
third positively charged particle with charge q is placed at (0,
H). Find an expression for the net electric force on the third
particle with charge q. Show that the two charges Q behave like a
single charge 2Q located at the origin when the distance H is much
greater than A.

Three charged particles are placed at each of three corners of
an equilateral triangle whose sides are of length 3.4 cm . Two of
the particles have a negative charge: q1 = -7.8 nC and q2 = -15.6
nC . The remaining particle has a positive charge, q3 = 8.0 nC .
What is the net electric force acting on particle 3 due to particle
1 and particle 2?
1) Find the net force acting on particle 3 due to...

Three charged particles are placed at each of three corners of
an equilateral triangle whose sides are of length 2.0 cm . Two of
the particles have a negative charge: q1= -6.1 nC and q2 = -12.2 nC
. The remaining particle has a positive charge, q3 = 8.0 nC. What
is the net electric force acting on particle 3 due to particle 1
and particle 2?
Find the net force ΣF⃗ 3 acting on particle 3 due to the...

To practice Problem-Solving Strategy 21.1 Coulomb's Law. Three
charged particles are placed at each of three corners of an
equilateral triangle whose sides are of length 2.1 cm . Two of the
particles have a negative charge: q1 = -7.7 nC and q2 = -15.4 nC .
The remaining particle has a positive charge, q3 = 8.0 nC . What is
the net electric force acting on particle 3 due to particle 1 and
particle 2?

1. Charged Particles
Point P is located 25 cm away from a particle with a charge of +6.0
× 10– 9 C.
a) What is the magnitude of the electric field at point P?
b) If a second particle with a charge of −4.0 × 10– 9 C is placed
at point P, what is the magnitude of
the force it will experience?
c) Will the force in part (b) be directed towards or away from the
first particle?

Four identical particles (charge Q=1.6 nC, mass m = 4 g) are
placed at corners of a square of side b = 5.9 cm. What is the
electric potential energy of this system? (The electric potential
energy is zero when the particles are very far apart.)
The particles are now released from rest. What is the speed of
each particle when they are very far apart? (You may ignore
gravity.)

The figure below shows three charged particles, all lying along
the horizontal axis. Particle A, at left, has a 6.35 nC charge.
Particle B has a 1.10 nC charge and is 3.00 cm to the right of A.
Particle C has a −2.35 nC charge and is 2.00 cm to the right of
B.What is the magnitude (in N/C) of the electric field at a point
2.00 cm to the right of A?
A fourth particle with a charge of...

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