Saturday
April 19, 2014

Homework Help: Nuclear Physics

Posted by amy on Thursday, February 3, 2011 at 1:58pm.

An investigator receives Co-60 (5.27 year half life) for use in a research study.
Unfortunately the Co-60 is contaminated with Cs-137 (30.0 year half life). The
initial Co-60 activity is 400 times the initial Cs-137 activity. How long after the
initial assay will the Cs-137 activity be 0.2 times the Co-60 activity?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - The isotype caesium -137, which has a half life of 30 years, is a ...
algebra - Suppose a sample of Cesium-137 with initial mass of 200 grams decays ...
Chemistry - Which radioactive sample would contain the greatest remaining mass ...
chemistry - how much cobalt-60 remains 15 years after it is initially made?...
Physcis 30 - Q1) If there are 100 radioactive atoms with a half-life of 30 ...
chem - Cesium-137 has a half life of 30.0 years. If initially there are 8.0 kg ...
math - a life insurance agent is to be paid a commission according to the ...
physics - If the physical half-life of sulfur-35 is 87.1 days, and the biologic...
Chemistry please help! - A Cesium 137 sample has a measured radioactivity of 50 ...
Finance - Ra Rb Year 03 40% -30% Year 04 -24% 22 Year 05 30 42 year 06 26 46 ...

Search
Members