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
Be at least 18 years old at the time of filing Form N-400, Application for Naturalization.
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Have a basic understanding of U.S. history and government (civics).
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Demonstrate an attachment to the principles and ideals of the U.S. Constitution.
Answer:
The long-term relationships between agencies, congressional committees, and interest groups in specific policy areas.
Explanation:
none of them are a right angle since there isn't an angle on any of those measurements that are 90 degrees.
Answer: C
. Supply of soybeans will increase and the supply of corn will decrease
Explanation:
Soybean fertilizer is an integral input in the farming of soybean so with the price of soybean fertilizer decreasing, it will be cheaper to grow soybean as opposed to corn.
Farmers will therefore farm more soybeans than corn to benefit from this lower cost and so will farm less of corn as they can only farm one at a time. This will lead to an increased supply of soybean and a reduced supply of corn.
