Doug Rubs a Piece of Fur on a Hard Rubber

question 32

Multiple Choice

Doug rubs a piece of fur on a hard rubber rod,giving the rod a negative charge.What happens?

• A)Protons are removed from the rod.
• B)Electrons are added to the rod.
• C)The fur is also charged negatively.
• D)The fur is left neutral.

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Definitions:

Longitudinal Research

A research design that involves repeated observations of the same variables over short or long periods of time to track changes and developments.

Cross-Sectional

A research design that examines data from a population, or a representative subset, at one specific point in time.

Mixed Design

A research design that combines elements of both within-subjects (measuring the same subjects across different conditions) and between-subjects designs (comparing different groups of subjects).

Longitudinal Research

A research design in which the same subjects are observed for an extended period of time to detect any changes that may occur.