Examlex
Explain why no object that has mass can ever move at a speed equal to the speed of light.At what velocity do massless particles (e.g., photons) travel in vacuum?
Income Inequality
Refers to the uneven distribution of income and wealth across the various participants in an economy.
Top Quintile
The highest twenty percent segment of a population sorted by income or other measurable criteria.
Bottom Quintile
The segment of a population that ranks in the lowest 20% in terms of income, wealth, or another socioeconomic metric.
U.S. Bureau of Census
The U.S. Bureau of Census is a federal agency responsible for collecting and analyzing data about the population, economy, and communities in the United States.
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