Oh wow, thank you so much. I understand what I was doing wrong. Maybe it was because I was working so late I just was confusing myself.
Is this the correct train of thought?
1/2 life is 28 years
half of that half life is 1/4, which is 56 years
and half of 1/4 is 1/8 (which is how much I am...
There would be 1/8 of the decayed isotopes present. If there were 1 million there would be 125,000 left.
So is the teachers solution to the problem incorrect? I see what you are saying but when I keep getting 84 years as 6/8 of its life having past, while for 7/8 I get 112 years.
First off I just wanted to say something quickly. I am a Visual Arts major taking a Introductory Physics class for fun, (probably my favorite class that I have ever taken, also the most rewarding. I have learned so much that I wish I had taken it sooner so I could have pursued it more)
My...