Two Sound Waves, One Wave Is Given by Y₁ = $\omega$

question 20

Multiple Choice

Two sound waves, one wave is given by y₁ = p_o sin (kx - $\omega$ t) and the other by y₂ = p_o sin (kx - $\omega$ t + $\pi$ /2) . The amplitude resulting from the interference of the two waves is

• A) 2p_o
• C) 1.25p_o
• E) 0

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Definitions:

Mean Absolute Percentage Error

A measure used in statistics to assess the accuracy of a forecast or prediction, calculated as the average of absolute percentages of errors between predicted and observed values.

Smoothing Constant

A smoothing constant is a parameter in exponential smoothing used to control the level of smoothing applied to a time series.

Holt-Winters Additive Model

A forecasting technique that applies weighted averages and seasonality to predict future data points.

Holt-Winters Multiplicative Model

A forecasting technique that accounts for trends and seasonality in time series data, using a multiplicative approach to model seasonal changes.