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What is meant by radioactivity?
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Updated 344 days ago|4/19/2014 12:03:18 PM
1 Answer/Comment
Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability.

Added 344 days ago|4/19/2014 12:03:18 PM
This answer has been confirmed as correct, not copied, and helpful.
an alpha partical is identical to a:
Weegy: alpha particle, positively charged particle, identical to the nucleus of the helium-4 atom, spontaneously emitted by some radioactive substances, consisting of two protons and two neutrons bound together, [ thus having a mass of four units and a positive charge of two. ] (More)
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Expert Answered
Asked 6/6/2013 5:38:20 AM
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Choose the category of connective used in the following example: He won the race easily. Nevertheless, his attitude prevented the team from being truly happy. take away or limit a preceding idea indicate order show consequence indicate repetition of an idea show space relationship
Weegy: Nevertheless, his attitude prevented the team from being truly happy. [ take away or limit a preceding idea indicate order show consequence indicate repetition of an idea (More)
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Expert Answered
Asked 6/6/2013 5:39:29 AM
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3. Proterozoic eon
Weegy: Bacteria was first formed in the Archean eon, (More)
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Updated 6/6/2013 6:25:19 AM
1 Answer/Comment
The Proterozoic Eon is the period of Earth's history that began 2.5 billion years ago and ended 542.0 million years ago. It is subdivided into three eras: the Paleoproterozoic (2.5 to 1.6 billion years ago), Mesoproterozoic (1.6 to 1 billion years ago), and Neoproterozoic (1 billion to 542.0 million years ago).

Added 6/6/2013 6:25:19 AM
Claude Bernard first recognized _____.
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Updated 11 days ago|3/17/2015 6:53:36 PM
1 Answer/Comment
Claude Bernard first recognized separate fluids outside and inside the cell.
Added 11 days ago|3/17/2015 6:53:34 PM
This answer has been added to the Weegy Knowledgebase
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Perform the indicated operation. 3 + (-4) 1 -1 7 -7
Weegy: 3 + (-4) = 3 - 4 = -1 User: Evaluate BD for A = 5, B = -2, C = 4 and D = -6. -12 -8 8 12 Weegy: If A = 5, B ...
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Why do anabolic steroids differ from other illegal drugs? A. They ...
Weegy: Why do anabolic steroids differ from other illegal drugs? C. They are only dangerous for men. User: Which of ...
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Simplify 7 - (-4) + 3(-6). -7 7 -9 9
Weegy: 7 - (-4) + 3(-6) =11+ (3)(-6) =11-18 = - 7 User: Simplify (3/10)(-5/9). 1/6 -1/6 77/90 User: ...
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What was NOT an effect of the Panic of 1893? A. the strengthening of ...
Weegy: A. the strengthening of the Populist Party User: Separate but equal would be the legal standard and not ...
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What is the solution of the equation? -10+sqrt x+8 =-4
Weegy: -10 + sqrt (x+8) = -4 sqrt (x+8) = -4 + 10 = 6 square both sides we get: x + 8 = 36 x = 36 - 8 = 28 When x = 28, ...
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