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Earn +20 ptsQ: What fraction of a radioactive nuclei remain after p half lives?
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What fraction of your lives you spend sleeping?
Roughly a third.
How much of one gram of radium -226 will remain unchanged after four half lives?
1g (1/2)4 = 1/16 g
How old is the specimen if the half-life is 300 years and there is 15 times more daughter product than parent material?
Age = no. of half lives x duration of each half life ratio of Parent nuclei : Daughter Nuclei 1 : 15 total of 16 parts, and for every 16 parts one part is a parent nuclei Mt = Mo x (0.5)^n Mt = amount remaining Mo = Initial amount n = number of 1/2 lives Mt = 1/16 (1/2)^n = 1/16 (1/2)^n = (1/2)^4 n=4 Age = 4 x duration of each half life Age = 4 x 300 Age = 1200 Therefore, the age of the specimen is 1200 years.
35 of students at Charles Walters Middle School live more than 7 miles from school. What fraction of the students lives more than 7 miles from school?
The answer depends on the total number of students at the school. Since this information has not been disclosed, it is not possible to answer the question.
What does number integers mean in math?
There is no such word.An integrator is a person or operation that integrates a function.
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