A train moves slowly along a straight portion of track according to the graph of position versus time in Figure 1a. Find: a. the average velocity for the total trip, b. the average velocity during the first 4.00 s of motion, c. the average velocity during the next 4.00s of motion, d. the instantaneous velocity at t ︎ 2.00 s, and e. the instantaneous velocity at t ︎ 9.00 s.

a coal burning power plant

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.

your answer is c! hope this : )

radiation

explanation:

heat is transmitted by radiation