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3 years ago

8.

Mathematics

1 answer:

seropon [69]3 years ago

5 0

Answer:

I'm sorry I don't know the answer and I couldn't find it anywhere :(

Step-by-step explanation:

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PLEASE HURRY IM TIMED!!!

andriy [413]

Answer-

A. Brandon’s sound intensity level is 1/4th as compared to Ahmad’s.

Solution-

Given that, loudness measured in dB is

$L=10\log \frac{I}{I_0}$

Where,

I = Sound intensity,

I₀ = 10⁻¹² and is the least intense sound a human ear can hear

Given in the question,

I₁ = Intensity at Brandon's = 10⁻¹⁰

I₂ = Intensity at Ahmad's = 10⁻⁴

Then,

$L_1=10\log \frac{I_1}{I_0}=10\log \frac{10^{-10}}{10^{-12}}=10\log \frac{1}{10^{-2}}=10\log 10^{2}=2\times10\log 10=20$

$L_2=10\log \frac{I_2}{I_0}=10\log \frac{10^{-4}}{10^{-12}}=10\log \frac{1}{10^{-8}}=10\log 10^{8}=8\times10\log 10=80$

$\therefore \frac{L_1}{L_2} =\frac{20}{80} =\frac{1}{4}$

5 0

3 years ago

Tell how you knew whether to select a.m. or p.m.

Darya [45]

Answer:

You know if it is day time or night time

Step-by-step explanation:

8 0

2 years ago

Help me I pay you guys

Eva8 [605]

Answer:

20 degree angle

Step-by-step explanation:

8 0

2 years ago

the first box is divide/ multiply the second is height/base and the third is divide/multiply the fourth is the base/ 2 / the ar

jeka94

-DIVIDE- the area of a triangle by the -BASE-
, and -MULTIPLY- the result by -2-

Explanation:
Thats because the formula for the area of a triangle is 1/2 x base x height OR (much not confusing formula) BASE x HEIGHT divided by 2

Mark me brainliest tysm! Have a nice day

6 0

2 years ago

Does anybody no what is 19+9 is?

Licemer1 [7]

28

step by step
19+9=28

5 0

3 years ago

Read 2 more answers