Five Boys Are Pushing on a Snowball, and Each Is $\degree$

question 32

Multiple Choice

Five boys are pushing on a snowball, and each is pushing with a force of 20.0 N. However, each boy is pushing in a different direction. They are pushing north, northeast, east, southeast, and south. (Each boy is pushing at an angle of 45.0 $\degree$ relative to his neighbor.) What is the magnitude of the total force on the ball?

• A) 54.2 N
• B) 48.3 N
• C) 24.1 N
• D) 0 N

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Definitions:

Standardize Procedures

Established protocols to ensure consistency and uniformity across experiments or assessments.

Manipulation Check

A measure used to determine whether the manipulation of the independent variable has had its intended effect on a subject.

Double-Blind Procedures

An experimental procedure wherein both the subjects of the experiment and the researchers do not know which subjects are receiving the active treatment versus a placebo, to prevent bias.

Demand Characteristics

Features of an experiment that inadvertently lead participants to guess its purpose, potentially affecting their behavior.