8. Strontium-90 has a half-life of 28 days. ovn brs (a) A sample has a mass of 50 mg initially. Find a formula for the mass remaining after t days. (b) Find the mass remaining after 40 days. W 20 (c) What is the rate of decay after 40 days? (d) How long does it take the sample to decay to a mass of 2 mg?

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**Problem 8: Radioactive Decay of Strontium-90**

Strontium-90 has a half-life of 28 days. Answer the following questions based on this information:

(a) **Initial Problem Statement:**
A sample has a mass of 50 mg initially. Find a formula for the mass remaining after \( t \) days.

(b) **Mass Calculation After Specified Days:**
Find the mass remaining after 40 days.

(c) **Decay Rate Analysis:**
What is the rate of decay after 40 days?

(d) **Time Calculation for Specific Mass:**
How long does it take the sample to decay to a mass of 2 mg?
Transcribed Image Text:**Problem 8: Radioactive Decay of Strontium-90** Strontium-90 has a half-life of 28 days. Answer the following questions based on this information: (a) **Initial Problem Statement:** A sample has a mass of 50 mg initially. Find a formula for the mass remaining after \( t \) days. (b) **Mass Calculation After Specified Days:** Find the mass remaining after 40 days. (c) **Decay Rate Analysis:** What is the rate of decay after 40 days? (d) **Time Calculation for Specific Mass:** How long does it take the sample to decay to a mass of 2 mg?
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