A Professor Holds an Eraser Against a Vertical Chalkboard by Pushing

question 39

Multiple Choice

A professor holds an eraser against a vertical chalkboard by pushing horizontally on it.She pushes with a force that is much greater than is required to hold the eraser.The force of friction exerted by the board on the eraser increases if she:

• A)pushes with slightly greater force
• B)pushes with slightly less force
• C)stops pushing
• D)pushes so her force is slightly downward but has the same magnitude
• E)pushes so her force is slightly upward but has the same magnitude

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Definitions:

Calculators

Electronic or mechanical devices designed to perform mathematical operations, ranging from basic calculations to complex computations.

Export

The act of sending goods or services from one country to another country for sale or trade.

Jamaica

An island country situated in the Caribbean Sea, known for its rich culture, music, and scenic beauty.

Trade Policy

A government's strategy regarding international trade, affecting how goods and services move across borders through tariffs, trade agreements, and regulations.