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:
C, both A and B
Explanation:
A salmonella infection is an infection in the intestinal track. Some of the sources of the infection are contaminated water and food, meat, fertilizer and pets.
Symptoms of salmonella include abdominal pain with cramps, diarrhea, vomiting with accompanying nausea. Some people also experience chills and fever.
The illness usually goes away on its own but some patients may need hospital treatment.
Prevention of salmonella include hand washing, cooking well of all foods and avoiding contact with unknown animals.
Findings In this meta-analysis of 16 studies involving 59 138 patients, maternal marijuana use during pregnancy was linked to a higher risk of preterm births and admission to neonatal intensive care units as well as a decrease in the average birth weight, the 1-minute Apgar score, and the babies' head circumference.
Birth weight, gestational age at delivery, small for gestational age (defined as less than the fifth percentile fetal weight for gestational age), preterm delivery (defined as before 37 weeks' gestation), admission to the neonatal intensive care unit (NICU), Apgar score at 1 minute, Apgar score at 5 minutes, the incidence of an Apgar score less than 7 at 5 minutes, fetal head circumference, a rate of preterm delivery, gestational age at delivery, birth weight.
A quantitative, formal, epidemiological study method known as a "meta-analysis" is used to carefully evaluate the findings of earlier research in order to draw conclusions about that body of work. The study is typically—but not always—based on randomized, controlled clinical trials. In order to find the answers to a particular topic, a systematic review makes an effort to compile all accessible empirical studies. The statistical method of assessing and combining data from numerous related studies is called a meta-analysis.
learn more about low birth weight brainly.com/question/15058757
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1 : the act of predetermining : the state of being predetermined: such as
a : the ordaining of events beforehand
b : a fixing or settling in advance
2 : a purpose formed beforehand
<em>Hi,</em>
Answer:
<em>In this scenario, Anita is most likely suffering from</em> nutritional toxicity.
