Suppose that the radius of the circular path is r when the speed of the rocket is v and the acceleration of the rocket has magnitude a. if the radius and speed are increased to 2r and 2v respectively, what is the magnitude of the rocket's subsequent acceleration?

a) 3 b) 2a c) a d) 4a e) 8a

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.

wavelength divides in half and speed stays the same.