Four Smiley Faces Are Situated Along the X Axis as Follows

question 29

Multiple Choice

Four smiley faces are situated along the x axis as follows: m₁ = 5 kg at - 5.0 m, m₂ = 3 kg at - 2.0 m, m₃ = 3 kg at 1.0 m, and m₄ = 2 kg at 3.0 m. Where is the center of mass situated?

• A) 3.1 m
• B) 0.0 m
• C) - 1.7 m
• D) - 0.80 m
• E) - 3.1 m

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Definitions:

Facial Feedback Effect

The tendency of facial muscle states to trigger corresponding feelings such as fear, anger, or happiness.

Polygraph

A device that measures physiological responses, such as heart rate and sweat production, to assess truthfulness.

Electrocardiograph

A device used to record the electrical activity of the heart over a period of time.

Electroencephalograph

A machine used to record the electrical activity of the brain through electrodes attached to the scalp.