When a candle burns, which forms of energy does the chemical energy in the candle change to? a. light and sound b. heat and sound c. light and heat d. electric and light

When a candle burns, the chemical energy in the candle changes to light energy and heat energy. (C)

Explanation:

Did you ever light a candle and have sound or electricity come out of it ? ?

unlike poles attract

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.