The Intensity of the Waves from a Point Source at a Distance

question 80

Multiple Choice

The intensity of the waves from a point source at a distance d from the source is I. What is the intensity at a distance 2d from the source?

• A)4I
• B)2I
• C)I/2
• D)I/4
• E)I/ \(\sqrt { 2 }\)

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Definitions:

Concrete Operational Stage

A stage in Piaget's theory of cognitive development (approximately age 7-12) where children gain the ability to think logically about concrete events.

Transitive Inference

A form of reasoning that allows the deduction of relationships between items not directly compared, often formulated as "If A>B and B>C, then A>C."

Myelination and Pruning

The process of brain development where myelin sheaths grow around nerve fibers to speed up neural transmissions and unwanted connections are eliminated to enhance efficiency.

Brain Development

The process involving the growth and maturation of the brain, including neurogenesis, synaptogenesis, and myelination, primarily occurring during early childhood and adolescence.