If the movie workers wanted to slowly lower the car to the cliff's bottom, they might hook the car to a , a system of wheels and ropes.

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.

radiation

explanation:

heat is transmitted by radiation

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.