Many Physical Quantities Are Connected by Inverse Square Laws, That

question 102

Multiple Choice

Many physical quantities are connected by inverse square laws, that is, by power functions of the form . In particular, the illumination of an object by a light source is inversely proportional to the square of the distance from the source. Suppose that after dark you are in a room with just one lamp and you are trying to read a book. The light is too dim and so you move the distance to the lamp. How much brighter is the light?

• A) times
• B) times
• C) times
• D) times
• E) times

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Definitions:

Current Government Expenditures

The total spending by a government on goods, services, and debt interest within a given fiscal period, excluding capital expenditure.

Social Security Beneficiary

A person who receives benefits from the Social Security program, which typically includes retirees, disabled workers, and their families.

Workers Per Beneficiary

The ratio of active employees contributing to a system (like Social Security) to the number of recipients receiving benefits.