Particle 1 has a mass of m₁ = 4.00 × 106 kg, while particle 2 has a mass of m₂ = 7.00 × 106 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 0.150 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 negligible, and no other forces act on the particles. At one instant following the release, the speed of particle 1 is measured to be v₁ = 172 m/s. What is the electric potential energy at this instant?

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19.9
Particle 1 has a mass of m₁ = 4.00 × 10 6 kg, while particle 2 has a mass of m₂ = 7.00 × 106 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 0.150 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 negligible, and no other forces act on the particles. At one instant following the release, the speed of particle 1 is measured to
be v₁ =172 m/s. What is the electric potential energy at this instant?
ulf
Number i
9
my
9
9
m1
m2
(a) Initial (at rest)
(b) Final
9
m2
Units
v2f
<
Transcribed Image Text:19.9 Particle 1 has a mass of m₁ = 4.00 × 10 6 kg, while particle 2 has a mass of m₂ = 7.00 × 106 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 0.150 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 negligible, and no other forces act on the particles. At one instant following the release, the speed of particle 1 is measured to be v₁ =172 m/s. What is the electric potential energy at this instant? ulf Number i 9 my 9 9 m1 m2 (a) Initial (at rest) (b) Final 9 m2 Units v2f <
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