Question
A radioactive sample is monitored with a radiation detector which registers 5640 counts per minute. Twelve hours later, the detector reads 1410 counts per minute. Calculate the decay constant and the half-life of the sample.
Step 1
The activity of a radioactive sample after a time t is given by the formula: \[A = A_0 e^{-\lambda t}\] where \(\lambda\) is the decay constant. Show more…
Show all steps
Your feedback will help us improve your experience
Mayank Tripathi and 99 other Physics 103 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A radioactive sample contains $1.67 \times 10^{11}$ atoms of $\left._{47}^{108} \mathrm{Ag} \text { (half-life }=2.42 \mathrm{min}\right)$ at some instant. Calculate the decay constant and the activity of the sample in mCi.
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD
