In the Figure, a 10-Lb Weight Is Suspended from Two

question 45

Multiple Choice

In the figure, a 10-lb weight is suspended from two spring scales, each of which has negligible weight. Which one of the following statements about the readings in the scales is true?

• A) Each scale will read 5 lb.
• B) The top scale will read zero, the lower scale will read 10 lb.
• C) The lower scale will read zero, the top scale will read 10 lb.
• D) Each scale will show a reading between one and 10 lb, such that the sum of the two is 10 lb. However, exact readings cannot be determined without more information.
• E) None of these is true.

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Definitions:

Corpus Callosum

Band of white matter containing about 200 million nerve fibers that connects the two cerebral hemispheres to provide a route for direct communication between them.

Prefrontal Association Cortex

A region of the frontal lobes involved in planning complex cognitive behaviors, personality expression, decision making, and moderating social behavior.

Posterior Parietal Cortex

An area of the brain located at the back of the parietal lobe, involved in integrating sensory information and in the coordination of movements.

Syntax

Sets of rules for putting together words; proposed to be unique to human language.