How Do You Calculate Electric Force and Acceleration Between Charges?

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To calculate the electric force between two charges, use Coulomb's Law, which states that the force is proportional to the product of the charges and inversely proportional to the square of the distance between them. For the given charges of 7.4 x 10^-5 Coulombs separated by 2.7 meters, the force can be calculated as negative due to the repulsion between like charges. To find the acceleration of Charge B, apply Newton's second law (F = ma) using the calculated force and the mass of 0.05 kilograms. The relevant equations include Coulomb's Law and Newton's second law, which are essential for solving the problem. Understanding these principles will clarify the calculations needed for electric force and acceleration.
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Two negative electric charges, (Charge A on the left, and Charge B on the right) each with a charge of 7.4 x 10-5 Coulombs are fixed at a distance of 2.7 meters from each other. Find the electric force of charge A on charge B. (Don't forget, if the force points to the left, then the force is negative).

Find the electric force of Charge B on Charge A.

Suppose Charge B has a mass of 0.05 kilograms, and is now allowed to move freely. Find the acceleration of Charge B.

I am so lost. If someone can point me in the right direction it will be much appreciated. Thank you very much.
 
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where are the relevant eqns?
 

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