Two Speakers in a Stereo Emit Identical Pure Tones

question 102

Multiple Choice

Two speakers in a stereo emit identical pure tones.As you move around in front of the speakers,you hear the sound alternating between loud and zero.This occurs because of

• A)interference.
• B)changing sound level.
• C)diffraction.
• D)the Doppler effect.
• E)shock waves.

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Definitions:

Neuromuscular Junction

The synapse or connection between a motor neuron and a skeletal muscle fiber, enabling muscle contraction.

Atrophy

A decrease in the size of a tissue or organ due to disease, injury, or lack of use, leading to a reduction in function.

Action Potentials

Electrical impulses that travel along the membrane of a neuron or muscle cell, enabling the transmission of signals within and between cells.

Sarcomere

The basic functional unit of striated muscle fibers, responsible for muscle contraction, delineated by Z lines.