Two Motors in a Factory Are Running at Slightly Different

question 23

Multiple Choice

Two motors in a factory are running at slightly different rates. One runs at 825.0 rpm and the other at 786.0 rpm. You hear the sound intensity increase and then decrease periodically due to wave
Interference. How long does it take between successive instances of the sound intensity increasing?

• A) 1.79 s
• B) 1.43 s
• C) 1.66 s
• D) 1.54 s

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Definitions:

Mary Salter Ainsworth

A developmental psychologist best known for her work in early emotional attachment with "The Strange Situation" assessment.

Doreen Kimura

A psychologist known for her research in the field of sex differences in cognitive abilities and the neuropsychology of gender.

Behaviourism

A psychological approach focusing on observable behaviors and the ways in which they are learned or conditioned, excluding the analysis of emotions or thoughts.

Psychological Research

The systematic investigation of psychological issues and phenomena through controlled experimentation, observation, and analysis.