A Certain Crying Baby Emits Sound with an Intensity of 8.0

question 41

Multiple Choice

A certain crying baby emits sound with an intensity of 8.0 × 10^-8 W/m². What is the intensity level due to a set of five such crying babies, all crying with the same intensity? You can neglect any absorption, reflection, or interference of the sound. The lowest detectable intensity is 1.0 × 10^-12 W/m².

• A) 79 dB
• B) 69 dB
• C) 56 dB
• D) 49 dB
• E) 36 dB

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Definitions:

Real Rate

refers to the interest rate adjusted for inflation, providing a more accurate measure of the true cost of borrowing or the real yield on an investment.

Tax Rate Structure

The way in which different rates of taxation are applied to different levels of income or other bases.

Promised Benefit Levels

The specific amount of benefits, often related to pensions or insurance, guaranteed to recipients based on a predetermined plan.

Trust Fund

A legal entity established to hold assets on behalf of a person or group, managed by a trustee.