Question

One particle has a mass of 4.58 x 10^{-3} kg and a
charge of +6.79 μC. A second particle has a mass of 8.66 x
10^{-3} kg and the same charge. The two particles are
initially held in place and then released. The particles fly apart,
and when the separation between them is 0.193 m, the speed of the
4.58 x 10^{-3} kg-particle is 191 m/s. Find the initial
separation between the particles.

Answer #1

One particle has a mass of 2.11 x 10-3 kg and a
charge of +8.91 μC. A second particle has a mass of 7.27 x
10-3 kg and the same charge. The two particles are
initially held in place and then released. The particles fly apart,
and when the separation between them is 0.128 m, the speed of the
2.11 x 10-3 kg-particle is 142 m/s.
Find the initial separation between the particles.

Two particles each have a mass of 5.6 x 10-4 kg. One has a
charge of +5.4 x 10-6 C, and the other has a charge of -5.4 x 10-6
C. They are initially held at rest at a distance of 0.72 m apart.
Both are then released and accelerate toward each other. How fast
is each particle moving when the separation between them is
one-third its initial value?

Particle 1 has a mass of m1 = 3.30 × 10-6 kg, while particle 2
has a mass of m2 = 6.30 × 10-6 kg. Each has the same electric
charge. These particles are initially held at rest, and the
two-particle system has an initial electric potential energy of
0.140 J. Suddenly, the particles are released and fly apart because
of the repulsive electric force that acts on each one (see the
figure). The effects of the gravitational force are...

A particle with a mass of 3 g and a charge of +5 μC is released
from rest at a distance of 27 cm from another particle with a
charge of +27 μC, which is held fixed. How fast is the moving
particle traveling when it is 134 cm away from the fixed
particle?
Answer should be to two decimal place and in m/s.
2. parallel-plate air-gap capacitor is constructed from two
square plates of side length 29 cm. The...

a) A particle with a charge of -4.0 μC and a mass of 4.9 x
10-6 kg is released from rest at point A and accelerates
toward point B, arriving there with a speed of 83 m/s. The only
force acting on the particle is the electric force. What is the
potential difference VB -
VA between A and B? If VB
is greater than VA, then give the answer as a
positive number. If VB is less than
VA,...

In the figure particle 1 of charge q1 = 1.08
μC and particle 2 of charge q2 = -2.94 μC, are
held at separation L = 9.1 cm on an x axis. If
particle 3 of unknown charge q3 is to be
located such that the net electrostatic force on it from particles
1 and 2 is zero, what must be the (a)x
and (b)y coordinates of particle 3?

In the figure particle 1 of charge q1 = 0.91
μC and particle 2 of charge q2 = -3.09 μC, are
held at separation L = 10.5 cm on an x axis. If
particle 3 of unknown charge q3 is to be
located such that the net electrostatic force on it from particles
1 and 2 is zero, what must be the (a)x
and (b)y coordinates of particle 3?

In the figure particle 1 of charge q1 = 0.94 μC and particle 2
of charge q2 = -2.91 μC, are held at separation L = 10.6 cm on an x
axis. If particle 3 of unknown charge q3 is to be located such that
the net electrostatic force on it from particles 1 and 2 is zero,
what must be the (a)x and (b)y coordinates of particle 3?

In the figure particle 1 of charge q1 = 1.04 μC and particle 2
of charge q2 = -3.04 μC, are held at separation L = 9.4 cm on an x
axis. If particle 3 of unknown charge q3 is to be located such that
the net electrostatic force on it from particles 1 and 2 is zero,
what must be the (a)x and (b)y coordinates of particle 3?

A particle with a charge of −1.6 μC and a mass of
3.5 10-6 kg is released from rest at point A
and accelerates toward point B, arriving there with a speed of 35
m/s. The only force acting on the particle is the electric
force.
(a) Which point is at the higher potential?
point A point B ?
Give your reasoning.
Negative charge accelerates from a higher potential to a lower
potential.Negative charge accelerates from a lower potential to a...

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