Complete the sentence to describe how light behaves as it relates to its nature (waves or particles). light travels as blank and interacts with matter as blank

Light travels as  waves and interacts with matter as  particles .

The correct answers are "wave" and "particle".

Explanation:

Photoelectric effect: It is the phenomenon in which there is an emission of the electrons when the light is incident on the surface of the metal.

The wave nature of the light is explained by reflection.

Reflection: Reflection is the phenomenon in which the light wave gets reflected from the surface without getting absorb. It bounces back from the surface.  

Light demonstrates the characteristics of both particles and wave.

Therefore,  Light travels as wave and interacts with matter as particle.

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.