Radioactive Decay?

  • Thread starter Tedwerd
  • Start date
  • #1
1
0
I am confused about the half life and radioactive decay and how to figure out the problems.

here is one from my book:

A zircon sample contains 4000 atoms of the radioactive element 235U. Given that 235U has a half life of 700 million years, how long would it take to decay to 125 atoms?
 

Answers and Replies

  • #2
505
0
smells like homework
 
  • #3
611
2
Hi,
it is simple!
Just get the formula for radioactivity..and substitute all the number that you..
tip any physics books with a topic 'radioactivity' or google 'decay law'
 

Related Threads on Radioactive Decay?

  • Last Post
Replies
2
Views
802
Replies
6
Views
1K
  • Last Post
Replies
4
Views
8K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
10
Views
69K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
15
Views
4K
  • Last Post
Replies
7
Views
3K
  • Last Post
Replies
6
Views
18K
Replies
7
Views
625
Top