Saturday
April 19, 2014

Homework Help: Physics

Posted by Velaria on Thursday, November 20, 2008 at 4:55am.

Please help me with this problem.

The standard source for radiation therapy was radioactive 60Co which decays with a halflife of 5.27y, into an excited nuclear state of 60Ni. That nickel isotope then immediately emits two gamma ray photos wach with energy of 1.2 MeV. How many radioactive 60Co nuckei are present in a 6000 Ci source?

Cheers

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - A monochromatic light beam with energy 204eV is used to excite the Be...
Physics - A hydrogen atom in an excited state emits a Balmer beta photon ...
Chemistry - 1. Write balanced equations for each of the following processes. a...
Chemistry! - 1. Write balanced equations for each of the following processes. a...
Chemistry - 1. Write balanced equations for each of the following processes. a. ...
physics - A hydrogen atom in an excited state emits a Balmer beta photon ...
chemistry - The electron from a hydrogen atom drops from an excited state into ...
chemistry - Any help with the following questions would be greatly appreciated! ...
CHEM - The electron from a hydrogen atom drops from an excited state into the ...
Physics check - An excited atom decays to its ground state and emits a green ...

Search
Members