The Loudness L of a Sound (Measured in Decibels, DB)

question 174

Short Answer

The loudness L of a sound (measured in decibels, dB) is inversely proportional to the square of the distance d from the source of the sound. A person who is 10 ft from a lawn mower experiences a sound level of 70 dB. How loud is the lawn mower when the person is 50 ft away?

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Definitions:

Freud's Psychosexual

A theory proposed by Sigmund Freud that describes how personality develops through a series of childhood stages in which the pleasure-seeking energies of the id focus on certain erogenous zones.

Phallic Stage

A phase in Freudian psychosexual development, occurring roughly between the ages of 3 and 6, where the libido's focus is on the genital area.

Defense Mechanisms

Psychological strategies brought into play by individuals to handle reality and maintain self-image by protecting themselves from unpleasant emotions like guilt and anxiety.

Repression

A defense mechanism in psychoanalytic theory where unpleasant thoughts, feelings, or memories are unconsciously excluded from consciousness.