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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As I read the passage, I was reminded of a book I once read titled "Do you know enough about me to teach me?" by Dr. Stephen G. Peters.
Create a school-based program to encourage girls to resist the messages they are exposed to every day that pressure them to be thin and to dislike their bodies.
This discussion wants to help you learn about MI's concept of OARS. Take a few minutes and watch the YouTube video where OARS
Effective communication with families of ELs is an essential part of fostering student achievement and family engagement.
What is corrective feedback and how can it be effective with EL students? Why is student self-reflection important for students and teachers during formative
Assume you are the controller of a small retail shop in your area, and the chief executive officer (CEO) has requested that you explain to them
Media representation of the Black community is a difficult topic for me to form a clear opinion on, largely because I have stepped away from regular news consum