how much W is done by the electrostatic force on the moving point charge? Moving

Question

how much W is done by the electrostatic force on the moving point charge? Moving a Charge Part A A point charge with charge q, is held stationary at the origin. A second point charge with charge moves from the point (1, 0) to the point (2n) Please use k for Coulomb's constant rather than writing it out as (1/4reo) How much work W is done by the electrostatic force on the moving point charge? How much work W is done by the electrostaticforce on the moving point charge? Express your answer in joules. Use k for Coulomb's constant. x vx x x x x-10 43 Hints My Answers Give Up Review Part Incorrect: Try Again; 5 attempts remaining

Explanation / Answer

The initial position of q is at (x , 0) so its distance to the origin is:
Ri = x

The final position of q is at (x , y) so its distance to the origin is:
Rf = ( x² + y² )

The work done by the electrostatic force is:
W = k q (1/Ri - 1/Rf)
where
k = constant of Coulomb

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