What is the magnitude of the acceleration of an electron that is 1.3 cm from the center of the bead?

Complete Question

A small plastic bead has been charged to  15nC. What is the magnitude of the acceleration of an electron that is 1.3 cm from the center of the bead?

The  acceleration is  

Explanation:

From the question we are told that

    The charge on the bead is  

     The  distance of the electron from the center of the bead is

Generally the force between the electron and the bead is  mathematically represented as

Here e is the charge on an electron with value  

        k is  the coulombs constant with value  

Mathematically

Here M is the mass of an electron with value  

So

=>  

=>    

ice to water 1 water to vapour 2 latent heat

cant without the picture! ?