Question #2eecb
1 Answer
#m(t)=100e^(-ln2/1590t)# . Mass in grams and time in years.#m(t=1000)=100e^(-ln2/159xx100)# #t_(30g)=-ln0.3/ln2xx1590 years# #m'(t)=-(10/159ln2)e^(-ln2/1590t)#
Explanation:
Nuclear decay is a
Solving the differential equation gives
To find
Using
Answer
Question 2; just plug in the value
Question 3;
Question 4; I assume
This gives the rate of change of your radium in 1000 years time.