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
If the money supply increases and nominal GDP remains the same, then A. price level increases.
<h3>What is Money Supply?</h3>
This refers to the total amount of money that is in circulation in a country that usually increases spending.
Hence, an open market sale by the federal reserve will increase the interest rates because it would increase investment spending because an OMO sale decreases interest rates which make getting loans easier.
M= Money supply
V= Velocity
P- Price level
Y= nominal GDP
Hence, with the increase in the money supply, then there would be an increase in the price supply.
Read more about money supply here:
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Answer:
7
Explanation:
there is on online calculator that solves equations and shows the steps.
Answer:
take deep breaths thats all i got
Explanation:
Explanation:
I don't know I'm so sorry
