The half life of radioactive Uranium II is about 250,000 years. What percent of radioactive uranium will remain after 10,000 years?
I'm so sorry. Please forgive my incompetence.silvashadow, did you read the rules? Do not post complete solutions to homework problems. Our job is to help students learn. Simply giving the answers is not helping them.
Even more importantly, do not post incorrect solutions. The algebraic approach is approximately correct.
amanaka, do you know what the relevant equations are for radioactive decay?