Answer:
23 years
Step-by-step explanation:
Step 1: Calculate the rate constant (k) for the radioactive decay
A radioactive substance with initial concentration [A]₀ decays to 97% of its initial amount, that is, [A] = 0.97 [A]₀, after t = 1 year. Considering first-order kinetics, we can calculate the rate constant using the following expression.
ln [A]/[A]₀ = - k.t
k = ln [A]/[A]₀ / -t
k = ln 0.97 [A]₀/[A]₀ / -1 year
k = 0.03 year⁻¹
Step 2: Calculate the half-life of the substance
We will use the following expression.
= ln2/ k = ln 2 / 0.03 year⁻¹ = 23 years
Answer:
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Step-by-step explanation:
Im not sure but is the answer one?
Answer:
This formula:
Cylinder Volume = π • r² • height
Volume = PI * 4 ^2 * 5
Volume = PI * 16 * 5
Volume = 251.327412 cubic inches
Step-by-step explanation:
<span>Input (x) [-2.7] [-1.3] [0.8] [4.4]
Output f(x) [-5.25] [-1.75] [3.5] [12.5]
Input (x) [1.1] [2.4] [5.3] [6.9]
Output f(x) [4.25] [7.5] [11.75] [17.25]
Input (x) [-2.1] [0.9] [1.7] [3.3]
Output f(x) [-3.75] [3.75] [5.75] [9.75]
Just substitute the inputs for x.
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