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Maksim231197 [3]
3 years ago
15

More facts about mental health

Physics
1 answer:
MrRissso [65]3 years ago
7 0

Answer:

50% of lifetime mental illnesses start at age 14

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A speaker emits sound waves in all directions, and at a distance of 28 m from it the intensity level is 73 db. What is the total
Oduvanchick [21]

Answer:

P=0.197 Watt

Explanation:

Given That

B=73dB

Io= 1 * 10^-12

I=Io * 10^{\frac{B}{10} } \\I=2 * 10^{-5} Wm^{-2}  \\A=4 * pi * r^{2}\\ A=9852.03 m^{2}\\ Power= I * A\\P= 0.197 Watt

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What is amplitude, wavelength, and frequency?
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