A Speaker Generates a Continuous Tone of 440 Hz

question 40

Multiple Choice

A speaker generates a continuous tone of 440 Hz. In the drawing, sound travels into a tube that splits into two segments, one longer than the other. The sound waves recombine before being detected by a microphone. The speed of sound in air is 339 m/s. What is the minimum difference in the lengths of the two paths for sound travel if the waves arrive exactly out of phase at the microphone?

• A)0.10 m
• B)0.39 m
• C)0.77 m
• D)1.11 m
• E)1.54 m

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Definitions:

Cognitive Dissonance

A psychological phenomenon where individuals experience mental discomfort due to holding contradictory beliefs, values, or attitudes.

Positive Subjective Experiences

Personal experiences that evoke good feelings, satisfaction, or happiness.

Cognitive Epiphanies

Sudden and profound moments of realization or understanding that can significantly alter one's perspective or beliefs.

Positive Institution

Organizations or societal structures that promote the well-being of individuals and communities, fostering positive development and interactions.