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

question 26

Multiple Choice

The intensity of the waves from a point source at a distance d from the source is I. At what distance from the sources is the intensity equal to 2I?

• A)d/2
• B)d/ \(\sqrt { 2 }\)
• C)d/4
• D)d/8

Understand the basic structural units of DNA and RNA and their functions.

Comprehend the causes and types of genetic mutations and their impacts.

Recognize how mutations can affect phenotype without altering the protein-coding sequence.

Identify the influence of environmental factors on gene expression.

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Definitions:

Y-intercept

The point where a line or curve intersects the y-axis of a graph.

Absolute Value

The distance of a number from zero on the number line, without considering which direction from zero the number lies.

Sketch Graph

A rough drawing of a graph to represent a mathematical function or equation visually.

Formula

An expression or equation that describes a mathematical relationship between quantities.