First-Class Levers ________

question 43

Multiple Choice

First-class levers ________.

• A) have load at one end of the lever, fulcrum at the other, and effort applied somewhere in the middle
• B) are typified by tweezers or forceps
• C) in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location
• D) are the type using joints forming the ball of the foot as formed in raising the body on the toes

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Definitions:

Mass Transit

Public transportation systems that move large numbers of people efficiently across cities and surrounding areas.

Natural Increase

The growth in population size as a result of more births than deaths, excluding migration.

Infrastructure

The fundamental physical and organizational structures and facilities needed for the operation of a society or enterprise.

Population Density

The measure of the number of people living per unit of area, commonly expressed as people per square kilometer or square mile.