Ask your own question, for FREE!
Mathematics
OpenStudy (anonymous):

In 5 days a 10.0mg sample of radioactive material decays to 3.5mg. based on this information what is the half life?

OpenStudy (shadowfiend):

Hm. Do you have an exponential decay function to work with?

OpenStudy (anonymous):

Current quantity = original quantity times e raised to the power (elaspsed time / half life), if I remember correctly, or \[Q=Q _{0}e ^{t/h}\]. Plug in and solve for half life; you have everything else you need.

OpenStudy (anonymous):

Oops. I think my exponent is missing a k, specifically -ln(2). So the correct exponent, if I'm right, is e^(-t ln2)/h

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
jmahoney: ya'll gonna do an update?
3 minutes ago 7 Replies 0 Medals
14xavierrobinson: what is discrimination
2 hours ago 1 Reply 0 Medals
quasia: Who were the members of each alliance in World War I?
3 hours ago 5 Replies 1 Medal
Vocaloid: AP Calc BC Study Guide/Tutorial
3 hours ago 1 Reply 7 Medals
NoProbBob: Help Yo SS below
3 hours ago 15 Replies 1 Medal
yallbabynene08: help
2 hours ago 20 Replies 2 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!