After a lockdown drill at a school, the management team noted that the lockdown siren has a low volume and low pitch making it difficult to be heard at a distance. They called the company that supplied the siren and asked them to make the alarm louder and to give it a higher pitch. What effect does the change have on the resulting sound wave produced by the siren

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

d) physical means can be used to separate the components of air.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.