The Diagram Shows Four Situations in Which a Source of Sound

question 36

Multiple Choice

The diagram shows four situations in which a source of sound S and a detector D are either moving or stationary. The arrows indicate the directions of motion. The speeds (when not zero) are all the same. (Note that the detector in situation 3 is stationary) . Rank the situations according to the apparent frequency of the source, lowest to highest.

• A) 1, 2, 3, 4
• B) 4, 3, 2, 1
• C) 1, 3, 4, 2
• D) 2, 1, 4, 3
• E) None of the above

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Definitions:

Alternative Hypothesis

A statement that proposes a relationship between variables, opposite to the null hypothesis, indicating a significant effect or difference.

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The total cost of production divided by the number of units produced, providing a per-unit cost figure.