Question: Four identical particles each with charge Q are at the corners of a square of side L. The particles are released one at a time

Four identical particles each with charge Q are at the corners of a square of side L. The particles are released one at a time proceeding clockwise around the square. Each particle is allowed to reach its final speed a long distance from the square before the next particle is released. What is the final kinetic energy of?

(a) The first particle released,

(b) The second particle released,

(d) The fourth particle released?

(e) What is the final kinetic energy of each particle if the four particles are released simultaneously? Does this depend on whether or not the particles have identical masses?

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