a) total sound intensity engulfs:
Sound intensity level in dB assigned to a sound of intensity I
is defined as:
L = 10∙log₁₀( I/I₀ )
where I₀ = 10⁻¹²W/m² is the threshold of hearing
I = I₀ ∙ 10^( L/10) = 10^((L/10) - 12) W/m²
So
I_music = 10^((71/10) - 12) W/m² = 10^(-3.2)W/m² =
1.25×10⁻5W/m²
I_baby = 10^((79.5/10) - 12) W/m² = 8.91×10⁻5W/m²
=>
I_total = I_music+ I_baby = 10.16×10⁻5W/m²
(b) combined sound level
L_total = 10∙log₁₀( I_total/I₀ )
= 10∙log₁₀( 10.16×10⁻5/10⁻¹² )
= 80.06dB
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10. The Beck & Watson article is a
Group of answer choices
quantitative study
qualitative study
11. Beck & Watson examined participants' experiences and
perceptions using what type of research design?
Group of answer choices
particpant obersvation
phenomenology
12. Select the participants in the Beck & Watson study
Group of answer choices
Caucasian women with 2-4 children
Caucasian pregnant women
13. In the Beck & Watson study, data was collected via
a(n)
Group of answer choices
internet study
focus group...
14. Select the number of participants in the Beck & Watson
study
Group of answer choices
8
13
22
35
15. Beck & Watson determined their final sample size via
Group of answer choices
coding
saturation
triangulation
ethnography
16.Through their study, Beck & Watson determined
Group of answer choices
after a traumatic birth, subsequent births have no troubling
effects
after a traumatic birth, subsequent births brought fear, terror,
anxiety, and dread
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