What are the similarities and differences between the following three units, explain each unit. Your answers should address the following: What does the unit signify? What kind of a unit is it? If it is a derived unit, what does it stand for? How is it related to other units?(a) N-m(b) N(c) kg

what type of charge does it have? negative

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.

not too sure thinking all accelerations are pointed down