A 28 kg creepy coffin rests on a level floor. An external horizontal force of 50.0 N accelerates the creepy coffin at 10 m/s ^ 2; g=10 N/kg or m/s^ 2

glass has been rated on the mohs scale as 5.5

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.