I think the answer is B but i could be wrong
B
A is extremly hot
and c is -330.07 degrees farenheit
Answer:
B - Velocity
Explanation:
Velocity definition: “The speed of something in a given direction.”
Answer:
Thus the time taken is calculated as 387.69 years
Solution:
As per the question:
Half life of
= 28.5 yrs
Now,
To calculate the time, t in which the 99.99% of the release in the reactor:
By using the formula:

where
N = No. of nuclei left after time t
= No. of nuclei initially started with

(Since, 100% - 99.99% = 0.01%)
Thus

Taking log on both the sides:


t = 387.69 yrs