The activity of the radioactive element decreased 4 times in 8 days. Find its half-life.
| June 1, 2021 | education
Task data: N0 / N (change in the activity of the presented radioactive element) = 4; t (decay duration) = 8 days.
To calculate the value of the half-life of the presented radioactive element, we use the formula: N = N0 * 2 ^ -t / T.
Calculation: N / N0 = 2 ^ -t / T; 1/4 = 2 ^ -8 / T; 22 = 28 / T; 2 = 8 / T and T = 8/2 = 4 days.
Answer: The half-life of the presented radioactive element is 4 days.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
