A Wave Moving in the Positive X Direction Has an Amplitude

question 111

Multiple Choice

A wave moving in the positive x direction has an amplitude of 0.4 m, a frequency of 0.25 Hz, and a wavelength of 24 m. An equation, in which the units are SI, that might describe this wave is

• A) yx, t) = 0.2 sin 2t/4 + x/24).
• B) yx, t) = 0.4 sin 2t/4 - x/24).
• C) yx, t) = 0.4 sin 8t - x/6).
• D) yx, t) = 0.2 sin 0.5t/4 - x/24).
• E) yx, t) = 0.4 sin 2t/4 + x/6).

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Definitions:

Mean Squares

An average of squared deviations, used in variance analysis to assess variability within data sets.

Randomized Design

An experimental setup where subjects are randomly allocated to different treatment groups to eliminate bias and ensure validity of the results.

F-Distribution

A probability distribution used in analysis of variance, described by degrees of freedom and central to calculating F statistics.

Null Hypothesis

A hypothesis that suggests there is no statistical significance in a set of given observations, assuming no effect or no difference.