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anonymous
 5 years ago
Nancy can you help me
Radium decreases at the rate of 0.0428 percent per year.
a. What is its halflife? (A halflife of a radioactive substance is defined to be the time needed for half of the material to dissipate.
b. Write a recurrence relation to describe the decay of radium, where rn is the amount of radium remaining after n years.
anonymous
 5 years ago
Nancy can you help me Radium decreases at the rate of 0.0428 percent per year. a. What is its halflife? (A halflife of a radioactive substance is defined to be the time needed for half of the material to dissipate. b. Write a recurrence relation to describe the decay of radium, where rn is the amount of radium remaining after n years.

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0general formula for exponential decay

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A/2=A(0.000428)^x 1/2=(0.000428)^x find x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0* correction A/2=A(10.000428)^x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[1/2=(10.000428)^x\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\log _{0.999572}(.5)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so how does translate to what I need for b

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[r_n=r_{n1}(0.999572)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0are you electrical engineer or student?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0student this is module for 1 credit and I'm struggling!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I was asking elecengineer

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0by the way, did you figure out that credit card problem?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Suppose that one started out with 2 grams of radium. Find a solution for the discrete dynamical system illustrating this process and give the value for r(100), the amount remaining after 100 years.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay, we can use above formula =2(10.000428)^100

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that make sense because its half life in 1619 years so in 100 years there is not much difference
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