Two Harmonic Sound Waves Reach an Observer Simultaneously

question 65

Multiple Choice

Two harmonic sound waves reach an observer simultaneously. The observer hears the sound intensity rise and fall with a time of 0.200 s between the maximum intensity and the succeeding minimum intensity. What is the difference in frequency of the two harmonic sound waves?

• A)10.0 Hz
• B)0.200 Hz
• C)5.00 Hz
• D)2.50 Hz
• E)1.25 Hz

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Definitions:

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is true, commonly set at 0.05 or 5%.

Chi-Square Value

A statistic that measures the difference between observed and expected frequencies to test for independence in categorical variables.

Null Hypothesis

A hypothesis used in statistical testing that assumes no significant difference or effect exists between certain states or variables.

Observed Frequency

The number of times a particular value or category of data occurs in a set of data, used in the analysis of categorical variables.