When a person runs, how is the energy transformed?
A. The chemical energy in their food is
transformed into mechanical and thermal
energy.
B. The mechanical energy in their food is
transformed into electromagnetic and
thermal energy.
C. The chemical energy in their food is
transformed into sound and thermal
energy.

hujjujddf

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.