A boy with a mass of 65.0 kg stands on the floor and pushes horizontally against a wall. The wall pushes on the boy with a force of 100 N. Draw a force diagram including all of the forces on the boy. Determine a. The gravitational force on the boy by the earth.
b. The normal force on the boy by the floor.
c. The frictional force on the boy by the floor.

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.