A Long String Is Constructed by Joining the Ends of 2

question 68

Multiple Choice

A long string is constructed by joining the ends of 2 shorter strings. The tension in the strings is the same but string I has 4 times the linear mass density of string II. When a sinusoidal wave passes from string I to string II:

• A) the frequency decreases by a factor of 4
• B) the frequency decreases by a factor of 2
• C) the wave speed decreases by a factor of 4
• D) the wave speed decreases by a factor of 2
• E) the wave speed increases by a factor of 2

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Definitions:

Motor Neurons

Nerve cells that convey impulses from the spinal cord or brain to muscle cells, causing them to contract.

Impulses

Sudden desires or urges that prompt an individual to act in a particular way, often without premeditation.

Dendrites

Branch-like extensions of neurons that receive impulses and conduct signals towards the cell body.

Tree Branches

Extensions of a tree's main trunk, growing outward and upward, which support leaves, flowers, and fruits.