A 30-Kg and a 5

question 7

Multiple Choice

A 3.0-kg and a 5.0-kg box rest side-by-side on a perfectly smooth, level floor. A horizontal force of 32 N is applied to the 3.0-kg box pushing it against the 5.0-kg box, and, as a result, both boxes slide along the floor. How hard do the two boxes push against each other?

• A) 0 N
• B) 24 N
• C) 12 N
• D) 20 N
• E) 32 N

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Definitions:

Melanin

A pigment that gives color to skin, hair, and eyes, and provides protection against UV radiation.

Genetic Variants

Differences in DNA sequences among individuals, which can affect traits and susceptibility to diseases, contributing to genetic diversity within populations.

Slavery

The condition in which individuals are owned by others and deprived of personal freedom and the right to self-determination.

Blumenbach

Johann Friedrich Blumenbach, an 18th-century German physician and anthropologist known for his works on human classification.