Saturday
December 20, 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

physics - If the physical half-life of sulfur-35 is 87.1 days, and the biologic...
math - a life insurance agent is to be paid a commission according to the ...
chemistry - The isotype caesium -137, which has a half life of 30 years, is a ...
Chemistry - Uranium-238 has half life of 4.51 * 10^9 years Uranium-234 has half ...
life science - I cant grasp half life - the study guide question is how is half ...
algebra - Suppose a sample of Cesium-137 with initial mass of 200 grams decays ...
Chemistry please help! - A Cesium 137 sample has a measured radioactivity of 50 ...
Math - In 1976 a research hospital bought half a gram of radium for cancer ...
Math - In 1976 a research hospital bought half a gram of radium for cancer ...
college - . S-35 (t1/2 = 87.4 d) is used in cancer research. The biological half...

Search
Members