Scientists described light as a wave because the results of many experiments with light demonstrated that light behaves as a wave. light is now described as having properties of both a wave and a particle.

what is the most likely reason why this change was made?
enough scientists voted to accept the change.
data collected from many experiments could not be explained using waves.
a well-known scientist published a paper that described light as a particle.
a single experiment’s results demonstrated both wave and particle properties.

The answer is Data collected from many experiments could not be explained.

Explanation:

With pretty much every science theory, the theory can not change without valid experimentation by multiple professionals.

The answer is Data collected from many experiments could not be explained

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.

the answer is b, have negligible mass