Three Negative Charges of Equal Magnitudes Are Positioned Along the X-Axis

question 18

Multiple Choice

Three negative charges of equal magnitudes are positioned along the x-axis at x = -a, x=0, and x = +a respectively. The charge located at x=0 is moved away along the y-axis to a position (x,y) = (0, +a) . How does the potential energy of the system of charges change as a result?

• A)The potential energy may increase or decrease depending on the magnitude of the charges.
• B)The potential energy increases.
• C)The potential energy decreases.
• D)The potential energy stays the same.
• E)More information is needed to answer the question.

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Definitions:

F Ratio

A statistic used in analysis of variance (ANOVA) to determine whether the means of several groups are equal.

Null Hypothesis

A statement suggesting that there is no significant effect or difference, or that a parameter equals a specific value, used as a basis for statistical testing.

Critical Value

A value on the test statistic scale that marks the threshold for rejecting the null hypothesis, distinguishing between significant and insignificant outcomes.

Planned Comparisons

Specific, pre-defined comparisons made in statistical analysis to investigate particular hypotheses within data sets.