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What is the energy of a photon of frequency 3.30 × 1014 Hz? (h = 6.626 × 10−34 J⋅s)
Life Expectancy
The average number of years a person is expected to live based on demographic factors such as age, sex, and location.
Americans
Citizens or nationals of the United States, often associated with cultural, social, and political aspects unique to the country.
20th Century
The century spanning from January 1, 1901, to December 31, 2000, marked by significant events including technological advancements, wars, and social changes.
U.S. Population
The total number of residents living in the United States, encompassing diverse ethnic, cultural, and demographic backgrounds.
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