If 31.25 10 18 electrons are removed from a neutral dielectric, how much charge is stored in coulombs?

it will become charged by Q = 5C

Explanation:

When electron is removed from matter then the system will get positively charged

So we will have

here N = number of electrons that is removed

also we know that charge on one electron is given as

here we have

so it will become charged by Q = 5C

answer: good job it's all correct !

explanation:

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.