Paano Kalkulahin si Radioactive Decay
Ano ang Radioactive Decay?
Radioactive decay follows exponential decay law. The decay rate depends on the decay constant and the number of remaining nuclei.
Pormula
The calculator applies N(t) = N₀ × e^(-λt) or A(t) = A₀ × e^(-λt)
- N
- N₀ × e^(-λt) or A(t) = A₀ × e^(-λt) — N₀ × e^(-λt) or A(t) = A₀ × e^(-λt)
- A
- A₀ × e^(-λt) — A₀ × e^(-λt)
Step-by-Step na Gabay
- 1Enter initial activity or mass, decay constant (or half-life), and elapsed time
- 2The calculator applies N(t) = N₀ × e^(-λt) or A(t) = A₀ × e^(-λt)
- 3Results show remaining nuclei or activity
Mga Nalutas na Halimbawa
Input
N₀ = 1 mol (6.022 × 10²³), λ = 0.693/5730 yr⁻¹ (¹⁴C), t = 5730 yr
Resulta
N ≈ 0.5 mol (50%)
One half-life
Mga Karaniwang Mali na Dapat Iwasan
- ✕Using decay constant instead of half-life without converting
- ✕Assuming linear decay instead of exponential
Mga madalas itanong
Can radioactivity be accelerated or stopped?
No, decay rate is determined by nuclear physics and cannot be changed by temperature, pressure, or chemistry.
What's the difference between activity and amount?
Amount is number of nuclei (decreasing exponentially); activity is decay rate (also decreasing, at same rate).
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