Answer:
20
Step-by-step explanation:
Is 4 divisble by 60 yes or no
2 answers:
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Answer:
<h2>22 meters.</h2>Step-by-step explanation:
It's important to notice that the area is circular, which is defined by
Replacing given values and solving for r, we have
But, the diameter is twice the radius, so
Therefore, the diameter is 22 meters.
Answer:
Step-by-step explanation:
We will use the standard formula for half-life:
Where A₀ is the initial amount, a is the half-life, d is the time for one half-life, and t is the number of days.
So, we will substitute 1/2 for a and 24.3 for d. This yields:
We have a 3 gram sample. Therefore, our initial amount A₀ is 3:
And we want to find the remaining sample after 10 days. So, t=10. Substitute:
Use a calculator. So:
Therefore, for a 3 gram sample of Phosphorous-32 with a half-life of 24.3 days, after 10 days, there will be approximately 2.255 grams remaining.
