N airplane flying at a distance of 89.43 km from a radio transmitter receives a signal of intensity 59.44 μW/m2. What is the amplitude of the magnetic component of the signal at the airplane? Give your answer in nT (you don't need to write the prefix and unit).

The magnitude of the magnetic component is 0.7nT

Explanation: Please see the attachments below

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.