The time it takes for 1g of strontium-90 to decay to 250 mg is; 57.6 years
<h3>What is the half life of an element?</h3>
The formula for half life is;
A(t) = A₀ * (¹/₂)^(t/t_1/2)
Where;
A(t) is amount left after t years
A₀ the initial quantity of the substance that will undergo decay;
t_1/2 is the half-life of the decaying quantity.
We are given;
t_1/2 = 28.8 years
A₀ = 1 g
A(t) = 250 mg = 0.25 g
Thus;
0.25 = 1 * (¹/₂)^(t/28.8)
log 0.25 = (t/28.8) log (1/2)
-0.60206 = (t/28.8) * -0.3010
t = 2 * 28.8
t = 57.6 years
Read more about half life at; brainly.com/question/11152793
I believe that the answer to the question provided above is
(1)<span> </span>Formulate the maxim
<span>(2) Generalize the maxim into a law of nature</span>
<span>(3) Figure out the perturbed social world (PSW), that is, what the world would be like if this law</span> of nature were added to existing laws of nature and things had a chance to reach equilibrium.<span> </span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
Regionally, a home may be a general region, such as the south. Locally, this will be something on a much smaller scale such as your hometown. Globally, this will usually be a nation as your home.
Example -
My regional home is the south, my local home is Smallville, and my global home is the United States.
Hopefully, this helps! I'm a bit iffy on my answer, but I hope it satisfies you! =)
Answer:
Yugoslavia
Explanation:
The former Yugoslavia has become five independent countries and the province of Kosovo is currently fighting to break away of what is left of Yugoslavia.
