Americium-241 is used in some smoke detectors it is an
Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years . How long will it take in years for 40.0 % of an Am-241 sample to decay
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Discuss the ways in which animal and plant cultivation of the Neolithic Age changed humanity economically, politically, religiously, socially, and technologically.
An unknown radioactive substance has a half-life of 3.20 hours. If 38.7g of the substance is currently present, what mass was present 8.00 hours ago
A 225-m length of wire stretches between two towers and carries a 180-A current. Determine the magnitude of the force on the wire due to the Earth's magnetic field
a broadcasting executive is reviewing the prospects for a new television series,according to her judement , the probability is 0.25 that the show will achieve a rating higher than 17.8, and the probability is 0.15
Explain the ways in which the Indus, the Nile, the Tigris and Euphrates, and the Yangzi and Yellow Rivers shaped the development of ancient Chinese, Indian, Egyptian, and Mesopotamian civilizations.
An electron has an initial velocity of 2.00 ? 106 m/s in a uniform 4.00 ? 105 N/C strength electric field, How far does the electron travel before coming to rest
(1.) Identify and describe the six factors that distort performance appraisals.
Compare and contrast the development of sedentary, agricultural civilizations in the Americas with that of those in the Afro-Eurasian landmass. In your essay consider the timeframes of such development on these two sets of continents, the types of an
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Problem: Write a summary about the? "partisan divide" regarding the reaction to the word? "socialism."
Describe the public problem that the chosen federal policy addresses, focusing on its political, social, and economic significance.
Question: According to Clausewitz, which of these is not true?
Dr. Tundra wants to understand why people engage in political protest marches. He interviews 100 people to gather ideas about why people protest.
Question: Who oversees unemployment insurance programs in the US Department of Labor at the federal level?
Military forces operating in another sovereign country must account for certain limits to their actions in achieving mission accomplishment.
Define the concept democracy in your own words? How, according to the source, did the apartheid government prevent the growth of a united African Nationalism?