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2. Two electrical charges on the x-axis, one charge of -3C at -1i and the second...

2. Two electrical charges on the x-axis, one charge of -3C at -1i and the second of 2C electrical charge at 1i.
a) Calculate the electrical potential Φ for any point in xi and in particular for x = 2.
b)Calculate the electric field generated by electric charges at any point xi and in particular at x = 2
c)At x = 2 a third electric charge with a mass m y of 1C is placed. What is the potential energy of this charge due to the presence of the first two electrical charges?
If it is left free the third electric charge (of 1C) this one began to move, so that very far, where no longer it experiences the electric potential by the two first electric charges, it reaches a final speed of 2m/s. What is the mass m of the third electric charge?

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