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An initial amount of a radioactive substance y 0 is given, along-(Answered)


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An initial amount of a radioactive substance y0?is given, along with information about the amount remaining after a given time t in appropriate units. For an equation of the form y = y0ekt?that models the situation, give the exact value of k in terms of natural logarithms: y0?= 2.56 lb; After 2 yr, 0.64 lb remains.

y o=2.56 l b


y=0.64 lb


t=2 yrs


The general decay equation is:


y= y o e






Since the quantity of substance decreases with time, the equation should be rewritten as:


y= y o e?kt


Substitute the...


Paper#9210390 | Written in 27-Jul-2016

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