These two waves travel along the same string: y1 = (4.17 mm) sin(2.24? x - 300? t), y2 = (5.96 mm) sin(2.24? x - 300? t + 0.727? rad). what are (a) the amplitude and (b) the phase angle (relative to wave 1) of the resultant wave? (c) if a third wave of amplitude 5.20 mm is also to be sent along the string in the same direction as the first two waves, what should be its phase angle in order to maximize the amplitude of the new resultant wave?

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.

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: