Hestern Ltd

question 76

Multiple Choice

Hestern Ltd.is a third-party organization that audits magazine and newspaper circulation in Toronto, and offers the data to newspapers for a price.This data is an example of _____.

• A)ethnographic research
• B)secondary information
• C)primary source of data
• D)focus groups

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Definitions:

P-Waves

Primary waves, which are compressional waves that travel through the Earth's interior during seismic events.

Velocity

A physical vector quantity that denotes the rate of change of position of an object, with both magnitude and direction.

Density

The mass per unit volume of a substance, used as a measure of its compactness.

Seismic Tomography

A technique using the arrival times of seismic waves to identify materials with different physical properties within the Earth.