Practice Problem: Radioactive Half-Life

All radioactive nuclei have a particular half-life, or the time it takes for their concentration to be cut in half. Given the half-life of one such nuclide, can you find the decay constant, and the fraction of nuclei left over after a specific time period?

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[martinmart-]

Woah... I have a test on this tomorrow and you happened to upload. That's very cool but a creepy coincidence... Thank you

[jerichorhodesalambatin]

Thank you Daveee. But fraction is the one asked right? Anyways thank you so much. You really are a big help. God bless.

[tylerkutschbach]

What day this week will you do Theodore Roosevelt?

[pushdword]

I'm not sure if you have this but: can you make a video about radiometric dating? Not only for carbon, but for another ones that is used to date things in billions of years scale.

[-aquariusbae]

the half life of cobalt 60 is 5.26 years. if 50 grams are left after 15.78 years, how many grams were tge original sample?

[yashodhanbarve]

e^-1.98 =13 years ?? How to solve power of e

[ChukwumaAguocha-hthj]

How do you get 0.138
Explain better because am new to this topic half life

[missfaithme]

Thank you, how did you get 0.138 from the last equation?

[OrangeSlayer-yojl]

dame my teacher dose not explain like that thanks professor dave