Ask Experts Questions for FREE Help !
Ask
    kushak's Avatar
    kushak Posts: 0, Reputation: 1
    New Member
    		  
    #1

    Jan 9, 2011, 07:57 PM
    This is a Physics 30 question relating Radioactivity Decay and Half Life
    The activity of a sample of a radioactive isotope is 1800Bq. If this isotope has a half-life of 16 days, what is the activity after 16 days? 24 days? and 60 days?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Jan 10, 2011, 10:57 AM

    Since the sample has a half-life of 16 days, it means that after 16 days, it's activity will drop to half its initial activity.

    You can put the activity of the sample at any time t, with initial activity Ao, final activity at time t being A and half life h as follows:



    This gives you the activity A at any time t as:



    Plug in 16, 24 and 60 to get the various activities.

    Post what you get! :)
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

9. How many days does it take for 16g of palladium-103 to decay to 1.0g? The half-li [ 1 Answers ]

Physics- Radioactivity [ 1 Answers ]

A radioactive sample contains 10mCi of activity. 8 hours later only 2.5mCi remain. What is the half-life?

Please Help! Chemistry Half Life Question [ 0 Answers ]

SECONND ODER REACTION: 2B -->Q + 2D It was determined experimentally that it took 3.0 minutes for the concentration of B to drop from .086M to 4.3e-4 at 37 C. What is the half life in minutes under these conditions?

Radioactivity - alpha decay [ 1 Answers ]

Find the energy (in MeV) released when α decay converts radium 226/88 Ra (atomic mass = 226.025 40 u) into radon 222/86 Rn (atomic mass = 222.017 57 u). The atomic mass of an α particle is 4.002 603 u.

Question relating to probability [ 3 Answers ]

Hi all, I got a question relating to Probability. I will be thankful to you if I could get a suitable answer along with illustration for this. regards, Murthy Question is : There is Tournment with 50 teams. A Team that lost for 3 matches has to quit the tournment. What would be the...

View more questions Search