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What is a half-life in simple terms?
1 : the time required for half of something to undergo a process: such as. a : the time required for half of the atoms of a radioactive substance to become disintegrated.
What does half-life mean example?
The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. Half-life is used to estimate how long it takes for a drug to be removed from your body. For example: The half-life of Ambien is about 2 hours.
What does the half-life means?
The half-life of a drug is the time it takes for the amount of a drug’s active substance in your body to reduce by half.
What are the two definitions of half-life?
Half-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve or for the count rate to halve. Count-rate is the number of decays recorded each second by a detector, such as the Geiger-Muller tube. The half-life of radioactive carbon-14 is 5,730 years.
What is the best definition of half-life?
or half life, half·life the time required for one half the atoms of a given amount of a radioactive substance to disintegrate. the time required for the activity of a substance taken into the body to lose one half its initial effectiveness. Informal. a brief period during which something flourishes before dying out.
How do you calculate half life?
Multiply both sides by t1/2{\\displaystyle t_{1/2}} and divide both sides by the entire left side to solve for half-life. Since there are logarithms in the final expression, you’ll probably need a calculator to solve half-life problems.
What is an example of a half life?
The half-life is the length of time that it takes for half of an initial sample to undergo a change. Usually this is the radio-active decay of a specific atomic weight of an element. For example, the half-life of Uranium-238 is 4.46 billion years.
What is the formula for half life?
2k
How many years are equivalent to life without parole?
15 years or longer (maximum of whole life order ), but individually set by judge. A whole life order means life without parole (e.g. natural life in prison until death)