Two Objects, a and B, Are Rubbed Together

question 86

Multiple Choice

Two objects, A and B, are rubbed together. As a result, object A acquires an excess negative charge while object B becomes positively charged. In comparison to their masses before the charging process, you can say that

• A) the mass of both objects increased.
• B) the mass of A increased and that of B decreased.
• C) the mass of A decreased and that of B increased.
• D) the mass of both objects decreased.
• E) None of the other choices is correct.

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Definitions:

Pancho Villa's Raid

An attack conducted in 1916 by the Mexican revolutionary Pancho Villa on the American town of Columbus, New Mexico, leading to tension between the United States and Mexico.

American Ships

Vessels registered under the United States for various purposes including commercial, military, or recreational use.

American Expeditionary Forces

The U.S. military forces sent to Europe during World War I (1917-1918) under the command of General John J. Pershing to fight alongside the Allies against the Central Powers.

John J. Pershing

A senior United States Army officer who commanded the American Expeditionary Forces on the Western Front in World War I.