How Large a Force Is Necessary to Stretch a 2

question 10

Multiple Choice

How large a force is necessary to stretch a 2.0-mm diameter copper wire (Y = 11 × 10¹⁰ N/m²) by 1.0%?

• A) 2.1 kN
• B) 3.5 kN
• C) 6.9 kN
• D) 11 kN
• E) 5.4 kN

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Definitions:

Parametric One-way Analysis

A type of parametric test that assesses for significant differences between more than two groups based on one independent variable.

Kruskal-Wallis Test

A nonparametric statistical test used to determine if there are statistically significant differences between three or more groups of an independent variable on a continuous or ordinal dependent variable.

Friedman Test

A non-parametric statistical test used to detect differences in treatments across multiple test attempts.

Randomized Block Experiment

An experimental design in which subjects are divided into blocks or groups that are similar, and then within each block, subjects are randomly assigned to treatment conditions.