An Electron (Charge −1

question 34

Multiple Choice

An electron (charge −1.6 × 10−¹⁹ C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0 N/C.How much work is done on the electron as it moves 20 cm?

• A) 1.6 × 10−²⁰ J
• B) −4.8 × 10−²⁰ J
• C) 4.8 × 10−²⁰ J
• D) zero

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Definitions:

Degrees of Freedom

The number of independent values in a statistical calculation that can vary without violating any constraints.

ANOVA Procedure

A statistical method used to test differences between two or more means by analyzing variance.

Population

A term referring to the complete set of individuals, events, or objects of interest in a particular study.

Null Hypothesis

A default hypothesis that there is no effect or no difference, and any observed difference is due to sampling error.