A radioactive substance decays at 7% per year. If initial mass is 200 grams, how much remains after 6 years?

Fri, 01 May 2026 22:32:55 +0000

**How Much Radioactive Material Remains After 6 Years? A Timeless Decay Calculation That Matters in Today’s World** Ever wondered what happens to a substance when it slowly breaks down over time—like a clock ticking invisibly? One of the most studied patterns in science is radioactive decay, where materials lose mass at a predictable rate. A knocking-out favorite among physics enthusiasts and casual researchers alike: a substance decaying at 7% per year. If you start with 200 grams, how much remains after six years? This question isn’t just academic—it matters in fields ranging from environmental health to medical imaging and nuclear science. With growing public interest in science-backed data, understanding how decay works behind the scenes empowers informed curiosity. Let’s explore which formula secures accuracy, why 7% decay resonates today, and what this means for real-world decisions—without sensationalism, just clarity. --- **The Science Behind the Decay: Why This Decay Rate Stands Out**