Solve the Problem $/ \mathrm { m } ^ { 2 }$

question 350

Multiple Choice

Solve the problem.
-What is the intensity in Watts $/ \mathrm { m } ^ { 2 }$ of a noise measured at 70 decibels? The level of sound intensity in decibels (dB) is $\beta = 10 \log \left( \frac { \mathrm { I } } { \mathrm { I } } \right)$ , where $\beta$ (beta) is the number of decibels, I is the sound intensity in $W / \mathrm { m } ^ { 2 }$ , and $\mathrm { I } _ { 0 } = 10 ^ { - 12 } \mathrm {~W} / \mathrm { m } ^ { 2 }$ . (Round to the nearest decibel.)

• A) \(1.00 \times 10 ^ { - 4 } \mathrm {~W} / \mathrm { m } ^ { 2 }\)
• B) \(1.10 \times 1015 \mathrm {~W} / \mathrm { m } ^ { 2 }\)
• C) \(7.00 \times 10 ^ { - 10 } \mathrm {~W} / \mathrm { m } ^ { 2 }\)
• D) \(1.00 \times 10 ^ { - 5 } \mathrm {~W} / \mathrm { m } ^ { 2 }\)

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Definitions:

Absorption

Absorption in a biological context refers to the process by which substances are taken up by the body, often through the intestinal tract.

Calcium

A chemical element essential for living organisms, primarily in cell signaling, blood clotting, and bone and teeth formation.

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A fat-soluble vitamin that helps the body absorb calcium and phosphorus, playing a crucial role in maintaining bone health.

Digestive System

The series of organs responsible for breaking down food, absorbing nutrients, and expelling waste from the body.