What Is the Long-Term Behavior of Radioactive Substance Mass Q(t)?

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SUMMARY

The discussion focuses on determining the long-term behavior of a radioactive substance mass Q(t), which is produced at a rate of 2 g/hr and decays at a rate proportional to its mass with a decay constant k of 0.1 (hr)-1. Participants emphasize the necessity of formulating a differential equation to model Q(t) based on the given rates of production and decay. The limit of Q(t) as time approaches infinity is the primary goal, which can be achieved by solving the established differential equation.

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Homework Statement


A process creates a radioactive substance at the rate of 2 g/hr and the substance decays at a rate proportional to its mass, with constant of proportionality k=0.1(hr)^-1. If Q(t) is the mass of the substance at time t, find the limit of Q(t) as t approaches to infinity.

Homework Equations


None.

The Attempt at a Solution


I know how to take the limit of Q(t) but I need to solve for Q(t) first. And I tried to find it but don't know the formula to solve for Q(t).
 
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Math10 said:

Homework Statement


A process creates a radioactive substance at the rate of 2 g/hr and the substance decays at a rate proportional to its mass, with constant of proportionality k=0.1(hr)^-1. If Q(t) is the mass of the substance at time t, find the limit of Q(t) as t approaches to infinity.

Homework Equations


None.

The Attempt at a Solution


I know how to take the limit of Q(t) but I need to solve for Q(t) first. And I tried to find it but don't know the formula to solve for Q(t).

Set up a differential equation for Q(t). Solve it.
 
Math10 said:

Homework Statement


A process creates a radioactive substance at the rate of 2 g/hr and the substance decays at a rate proportional to its mass, with constant of proportionality k=0.1(hr)^-1. If Q(t) is the mass of the substance at time t, find the limit of Q(t) as t approaches to infinity.

Homework Equations


None.

The Attempt at a Solution


I know how to take the limit of Q(t) but I need to solve for Q(t) first. And I tried to find it but don't know the formula to solve for Q(t).
You aren't "solving" for Q(t) -- you have to take the given information in the problem and write a differential equation that involves Q(t) based on that information.
 

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