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sciencing.com/calculate-radioactivity-6314042.html

Practice calculating the radioactive decay. Radium-226 has a half-life of 1,600 years. Calculate the activity of a one gram sample, where N = 2.66 x 10 exp(21).

www.physicsforums.com/threads/help-calculating-the-the-activity-of-a...

Help!!! calculating the the activity of a radioactive sample!! 1. find activity R 2. the average 70 KF males contain 140 gram of potassium. of this 0.012% is potassium 40. the half life of potassium 40 is 1.2 billion years. so how many K40 decay per second and what is the activity of K40 in the body??

www.graphpad.com/quickcalcs/radcalcform.cfm

Radioactivity calculator Radioactively labeled compounds are commonly used in biological and chemical research. Use these calculators to perform the radioactivity calculations commonly used in setting up and analyzing biochemical and pharmacological experiments.

www.radprocalculator.com/Decay.aspx

Radioactive Decay Useful for calculating today's activity for any radioactive isotope. You may also back decay sources to find out the original activity (or for any date), knowing the current activity. If the isotope that you wish to decay is not on the drop down list, check the 'not listed' check-box and manually enter the isotope name and its ...

physics.stackexchange.com/questions/107800/calculating-a-radioactive-samples...

closed as off-topic by Brandon Enright, jinawee, Kyle Kanos, BMS, Qmechanic ♦ Apr 11 '14 at 10:24. This question appears to be off-topic. The users who voted to close gave this specific reason: "Homework-like questions should ask about a specific physics concept and show some effort to work through the problem. We want our questions to be useful to the broader community, and to future use...

www.reference.com/science/calculate-radioactive-decay-6fa004cbeb64e777

If trying to determine the radioactive decay at the exact moment that the activity is measured, only these two numbers are required for the equation. The radioactive decay is determined by multiplying the rate of decay and the half-life.

www.hse2.ubc.ca/rad/Calc/calcframe.htm

* - Only the first 9 isotope have UBC disposal limits. Refer to your licence or contact your radiation safety office for the disposal limits of other isotopes.

physicsnet.co.uk/a-level-physics-as-a2/radioactivity/radioactive-decay

Radioactive decay is a random process. You cannot predict when an individual nucleus will decay but with large numbers of nuclei you can use a statistical approach. Activity. The activity of a sample is the average number of disintegrations per second its unit is the becquerel (Bq). One becquerel is one decay per second.

www.nde-ed.org/.../CommunityCollege/RadiationSafety/theory/activity.htm

Energy, Activity, Intensity and Exposure . Different radioactive materials and X-ray generators produce radiation at different energy levels and at different rates. It is important to understand the terms used to describe the energy and intensity of the radiation. The four terms used most for this purpose are: energy, activity, intensity and ...

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