A light horizontal spring has a spring constant of 167 N/m. A 2.77 kg block is pressed against one end of the spring, compressing the spring 0.132 m. After the block is released, the block moves 0.284 m to the right before coming to rest. The acceleration of gravity is 9.81 m/s^2
What is the coefficient of kinetic friction between the horizontal surface and the block?

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.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000