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

=>  

=>    

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

so easy. just google the electromagnetic waves and it’ll pop up.