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polet [3.4K]
1 year ago
14

The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as L = 10 lo

g StartFraction I Over I 0 EndFraction, where I 0 = 10 Superscript negative 12 and is the least intense sound a human ear can hear. What is the approximate loudness of a rock concert with a sound intensity of 10–1?
A. 2 Db
B. 22 Db
C. 60 Db
D. 110 Db
Mathematics
2 answers:
butalik [34]1 year ago
7 0

Answer:

The approximate loudness of a rock concert with a sound intensity of 10^{-1} is 110 Db.

Step-by-step explanation:

The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is :L=10 log (\frac{I}{I_0})

I_0=10^{-12}

We are supposed to find  What is the approximate loudness of a rock concert with a sound intensity of 10^{-1}

So, I = 10^{-1}

Substitute the values in the formula :

L=10 log (\frac{10^{-1}}{10^{-12}})

L=10 log (10^{11})

L=110 Db

So, the approximate loudness of a rock concert with a sound intensity of 10^{-1} is 110 Db.

Norma-Jean [14]1 year ago
7 0

Answer: D. 110 Db

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Step 1: Derive the first expression

a+c=10...equation 1

where;

a=number of adults

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And total number of people=10

Step 2: Derive the second expression;

Total cost of tickets=(price per child ticket×number of children)+(price per adult ticket×number of adults)

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Step 3: Combine equation 1 and 2 and solve simultaneously

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