A Very Loud Train Whistle Has an Acoustic Power Output

question 11

Multiple Choice

A very loud train whistle has an acoustic power output of 80 W. If the sound energy spreads out spherically, what is the intensity level in dB at a distance of 100 meters from the train? (I₀ = 10 ^{- 12} W/m²)

• A) 78.3 dB
• B) 88.0 dB
• C) 92.8 dB
• D) 95.0 dB

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Definitions:

Adler

Alfred Adler was an Austrian medical doctor and psychotherapist, founder of the school of individual psychology, known for his concepts of the inferiority complex and striving for superiority.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, eventually comes to trigger a conditioned response.

Neutral Stimulus

A stimulus that initially produces no specific response until it is paired with an unconditioned stimulus in classical conditioning.

Psychoanalytic Theory

A theory developed by Sigmund Freud that emphasizes unconscious mental processes and childhood experiences in shaping personality and behavior.