A Certain Crying Baby Emits Sound with an Intensity of 8.0

question 26

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:

Moderate Activity

Physical activity that is not too strenuous or intense, such as brisk walking or light cycling, beneficial for health.

Weekly Exercises

Physical activities or routines carried out on a weekly basis to maintain or improve health and fitness.

Ova Reserves

The supply of eggs present in a female's ovaries, which decreases in number and quality with age, affecting fertility.

Implantation

The process by which the blastocyst becomes attached to the uterine wall, completed by about 10 days after fertilization.