SOLUTION: A radioactive substance is decaying use the formula s=y(e raised to -0.04t) where y is initial amount and s is the amount remaining after t years.
A.) If y = 50grams how much mas
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Question 1205428: A radioactive substance is decaying use the formula s=y(e raised to -0.04t) where y is initial amount and s is the amount remaining after t years.
A.) If y = 50grams how much mass will be left after 5 years of decay
B.) How long will it take for the mass to decay to half of the original mass (y = 50g)
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
t is in years.
y, s, in grams.
(A)
how much still after 5 years?
----------you can use the computational tool of your choice.
OR
-----------and use the computational tool of your choice.
(B) Big hint
Take natural log of both sides of and solve for t.
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