A String with a Fixed Frequency Vibrator at One End

question 56

Multiple Choice

A string with a fixed frequency vibrator at one end is undergoing resonance with 4 antinodes when under tension T₁. When the tension is slowly increased the resonance condition disappears until tension T₂ is reached, there being no resonances occurring between these two tensions. How many antinodes are there in this new resonance?

• A) 3
• B) 4, since all resonances in this situation have the same number of nodes
• C) 5
• D) 2, since resonances only involve whole wavelengths
• E) 6, since resonances only involve whole wavelength

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Definitions:

Mirror Neurons

Neurons that fire both when an individual performs an action and when they observe the same action performed by another, thought to be involved in empathy and learning by imitation.

Dopamine

A neurotransmitter in the brain that plays a significant role in reward, motivation, memory, and motor control.

Prelinguistic Vocalizations

Early forms of vocal communication used by infants that precede the development of language and speech.

Deferred Imitation

A cognitive process where an individual reproduces the behavior of another person after some time has elapsed since initially observing that behavior.