The Variation in the Pressure of Helium Gas, Measured from Its

question 52

Multiple Choice

The variation in the pressure of helium gas, measured from its equilibrium value, is given by ΔP = 2.9 × 10−⁵ cos (6.20x − 3 000t) where x and t have units m and s, and ΔP is measured in N/m². Determine the frequency (in Hz) of the wave.

• A) 1 500
• B) 477
• C) 1.01
• D) 0.32
• E) 239

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Definitions:

Multivariate Analysis

A set of statistical techniques used to analyze data that involves more than one variable, understanding the effect and relationships among them.

Discriminant Analysis

A statistical technique used to classify observations into predefined categories based on several predictor variables.

Multiple Regression

A statistical technique whereby several variables are used to predict one.