Sr-90 is present in 1950 with an initial activity of 10 mbq how much will remain approximately in year 2010

To determine how much of Strontium-90 (Sr-90) will remain by 2010, we need to use the concept of radioactive decay. Strontium-90 has a half-life of approximately 28.8 years.

The formula for radioactive decay is:

\[
A(t) = A_0 \times \left( \frac{1}{2} \right)^{\frac{t}{T_{1/2}}}
\]

Where:
- \( A(t) \) is the activity at time \( t \),
- \( A_0 \) is the initial activity (10 MBq in 1950),
- \( T_{1/2} \) is the half-life (28.8 years for Sr-90),
- \( t \) is the time elapsed (2010 - 1950 = 60 years).

Now let's calculate the remaining activity.The remaining activity of Sr-90 in the year 2010 would be approximately 2.36 MBq, starting from 10 MBq in 1950.

Do you need more details or have any questions? Here are 5 related questions you might find interesting:

1. How is the half-life of a radioactive substance determined experimentally?
2. What factors influence the rate of radioactive decay?
3. How does the decay of Sr-90 affect the environment and human health?
4. Can the decay of a radioactive isotope like Sr-90 be reversed or slowed down?
5. What are some common uses of Sr-90 in industry and medicine?

**Tip:** Understanding half-life helps estimate how long it takes for radioactive materials to decay to safe levels.

Sr-90 is present in 1950 with an initial activity of 10 MBq. How much will remain approximately in the year 2010?

Learn how to calculate the remaining activity of Strontium-90 (Sr-90) over 60 years using the radioactive decay formula. Starting with an initial activity of 10 MBq in 1950 and a half-life of 28.8 years, find out how much remains in 2010. This problem involves exponential decay and half-life calculations, suitable for students in Grades 10-12.

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