A nonconducting sphere is made of two layers. The innermost section has a radius of 6cm and a uniform charge density of -5.0C/m^3. The outer layer has a uniform charge density of +8.0C/m^3 and extends from an inner radius of 6cm to an outer radius of 12cm. Determine the electric field for a) 0

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.

answer and explanation;

neither accurate nor precise.