Answer: Δβ = 28.5278 dB
Explanation:
from the question we are given that;
the sound gathering area Ga = 15.0 cm²
total area Ae = 0.800 cm²
efficiency ε = 38 %
therefore we have that the effective gathering area of the stethoscope is;
As = ε Ga
As = 38 % × 15 = 5.7 cm²
But I ∝ 1/A
where Ie/Is = As/Ae
Ie/Is = 5.7/0.800 = 7.125
given that we are to assume that sound is transmitted into a stethoscope 100 times, this gives
I'e/I's = Ie/Is × 100 = 7.125 × 100 = 712.5
Δβ = βe - βs = (10dB) log (I'e/Io) - (10dB) log (I's/Io)
Δβ = (10dB) log (I'e/I's)
Δβ = (10dB) log (712.5) = 28.5278
Δβ = 28.5278 dB
cheers i hope this helps
Answer:
Yes
Explanation:
It should be required to vaccinate all the students otherwi5 these students will cause spread of disease to other people at home and institutes.
All over the world, governments are trying to get all the students vaccinated.
Answer:
Obstructions are different in adults and children because first of all children have a smaller airway meaning that some objects may cut off there breathing more easily. Also children are more likely to get objects stuck in there airways since they don’t know any better. To retrieve an object from a child’s airway you should make sure they are breathing first and then use special tools to go in the child’s throat and retrieve the object. For an adult you will do the same thing but use a different tool. If the adult is able to still breath, eat, and swallow correctly the object will most likely just pass through the system at some point but it’s best to remove it.
Explanation:
